Common use of Two-Way Interconnection Trunks Clause in Contracts

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontier. Onvoy’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Two Way Local Interconnection Trunks for the exchange of traffic between Frontier and OnvoyTrunks, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities prior to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing ordering any Two-Way Local Interconnection TrunksTrunks from Verizon, Onvoy Reconex shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds CCS (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Local Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in (POI). 2.4.2 Two-Way Local Interconnection Trunks shall be from a LATA at which the Parties interconnect for the exchange of trafficVerizon End Office or Tandem to a mutually agreed upon POI. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection TrunksReconex is collocated in a Verizon Wire Center, the POI shall be at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection TrunksVerizon Wire Center. 2.4.4 2.4.3 On a semi-annual basis, Onvoy Reconex shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Local Interconnection Trunks that Onvoy Reconex anticipates Frontier that Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontierperiod. OnvoyReconex’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 2.4.4 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Local Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Local Interconnection Trunks. 2.4.6 2.4.5 Two-Way Local Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 2.4.6 With respect to End Office Two-Way Local Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) CCS equal to five (5). Either Party may disconnect End Office . 2.4.7 Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Local Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.005 during the average time consistent busy hour; Two-Way Local Interconnection Trunk groups that connect to a Verizon local Tandem shall be engineered using a design blocking objective of Xxxx Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Reconex shall engineer Two-Way Local Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275)national standards. 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy 2.4.8 Reconex shall determine and order the number of Two-Way Local Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Local Interconnection Trunk group. Onvoy Reconex shall order Two-Way Local Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Local Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Reconex shall complete ASRs in accordance with OBF Ordering and Billing Forum Guidelines as in effect from time to time. 2.4.11 Frontier 2.4.9 Verizon may (but shall not be obligated to) monitor Two-Way Local Interconnection Trunk groups Groups using service results for the applicable design design-blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem final Two-Way Local Interconnection Trunk group and Onvoy Reconex has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy Reconex a Trunk Group Service Request directing Onvoy Reconex to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Reconex will complete an ASR to establish or augment the End Office Two-Way Local Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.10 Any Tandem Two-Way Local Interconnection Trunk group between the Reconex’s POI and a Verizon Tandem will be limited to a maximum of 240 trunks unless otherwise agreed to by the Parties. In the event that any Tandem Two-Way Local Interconnection Trunk group exceeds the 240 trunk level at any time, Reconex shall promptly submit an ASR to Verizon to establish new or additional End Office Trunk groups to insure that such Tandem Two-Way Local Interconnection Trunk group does not exceed the 240 trunk level. 2.4.11 Upon request, Reconex will submit a written report to Verizon each month setting forth trunk utilization information and percentages. Reconex will calculate utilization percentages by using a traffic data analyzation system specified by Verizon, industry standard study periods and a time consistent busy hour. 2.4.12 The Parties will review all Tandem Two-Way Local Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Reconex will promptly augment all Tandem Two-Way Local Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Local Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Reconex will promptly submit ASRs to disconnect a sufficient number of Local Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Reconex fails to submit an ASR for Two-Way Local Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx Reconex for the excess Local Interconnection Trunks at the applicable Frontier ratesrates provided for in the Pricing Attachment. 2.4.13 The performance standard on final Two-Way Local Interconnection Trunks shall be that no such Local Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.14 Because Frontier Verizon will not be in control of when the timing and how many sizing of the Two-Way Local Interconnection Trunks are established between its network and OnvoyReconex’s network, FrontierVerizon’s performance in connection with on these Two-Way Local Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy 2.4.15 Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Local Interconnection Trunk group and install One-Way Local Interconnection Trunks to the applicable POI. 2.4.16 Notwithstanding any other provision of this Agreement, Two-Way Local Interconnection Trunks shall only carry Local Traffic, IntraLATA Toll Traffic and Internet Traffic. 2.4.17 Reconex will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Local Interconnection Trunks in accordance with SR-TAP-000191TAP192, including but not limited to those standards requiring that a call from Onvoy Reconex to a Frontier Verizon End Office will first be routed to the End Office Local Interconnection Trunk group between Onvoy Reconex and the Frontier Verizon End Office. 2.4.18 When the Parties implement Two-Way Local Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use or “PPU” factor, based on the total number of minutes of Traffic that each Party originates over the Two-Way Local Interconnection Trunks. Reconex will pay a percentage of Verizon’s monthly recurring charges for the facility on which the Two-Way Local Interconnection Trunks ride equal to Reconex’s percentage of use of the facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on Reconex’s side of Reconex’s-IP, which charges shall be solely the financial responsibility of Reconex. Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the Trunks on Verizon’s side of the Reconex-IP, the non-recurring charges shall be divided equally between the Parties; and, (b) for the portion of the Trunks on Reconex’s side of the Reconex-IP, Reconex shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.18, if Reconex fails to provide IPs at Verizon’s Tandem or End Office(s) in accordance with this Agreement, Reconex will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Local Interconnection Trunk groups until Reconex establishes such IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyEmergency, OnvoyEmergency, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third third-party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier access this Agreement or an applicable Verizon Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyEmergency, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Emergency shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s Verizon's network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Emergency shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Emergency anticipates Frontier that Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Emergency and FrontierVerizon. OnvoyEmergency’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End End-Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design design-blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design design-blocking objective of Xxxx-Xxxx Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Emergency shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 SR-2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design design-blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontier. Onvoy’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two Way Interconnection Trunks, prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy D&E shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds CCS (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One(POI). 2.4.2 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to Two-Way Interconnection Trunksa mutually agreed upon POI. Where D&E is collocated in a Verizon Wire Center, the POI shall be at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection TrunksVerizon Wire Center. 2.4.4 2.4.3 On a semi-annual basis, Onvoy D&E shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy D&E anticipates Frontier that Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontierperiod. OnvoyD&E’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 2.4.4 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 2.4.5 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 2.4.6 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) CCS equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.4.7 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.005 during the average time consistent busy hour; Two-Way Interconnection Trunk groups that connect to a Verizon local Tandem shall be engineered using a design blocking objective of Xxxx Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy D&E shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275)national standards. 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy 2.4.8 D&E shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy D&E shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy D&E shall complete ASRs in accordance with OBF Ordering and Billing Forum Guidelines as in effect from time to time. 2.4.11 Frontier 2.4.9 Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem final Two-Way Interconnection Trunk group and Onvoy D&E has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy D&E a Trunk Group Service Request directing Onvoy D&E to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy D&E will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Daysbusiness days. 2.4.12 2.4.10 Any Tandem Two-Way Interconnection Trunk group between the D&E’s POI and a Verizon Tandem will be limited to a maximum of 240 trunks unless otherwise agreed to by the Parties. In the event that any Tandem Two-Way Interconnection Trunk group exceeds the 240 trunk level at any time, D&E shall promptly submit an ASR to Verizon to establish new or additional End Office Trunk groups to insure that such Tandem Two-Way Interconnection Trunk group does not exceed the 240 trunk level. 2.4.11 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy D&E will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy D&E will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy D&E fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx D&E for the excess Interconnection Trunks at the applicable Frontier ratesrates provided for in the Pricing Attachment. 2.4.12 The performance standard on final Two-Way Interconnection Trunks shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.13 Because Frontier Verizon will not be in control of when the timing and how many sizing of the Two-Way Interconnection Trunks are established between its network and OnvoyD&E’s network, FrontierVerizon’s performance in connection with on these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the applicable POI. 2.4.15 Notwithstanding any other provision of this Agreement, Two-Way Interconnection Trunks shall carry only Reciprocal Compensation Traffic, IntraLATA Toll Traffic and Measured Internet Traffic. 2.4.16 D&E will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191TAP192, including but not limited to those standards requiring that a call from Onvoy D&E to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy D&E and the Frontier Verizon End Office. 2.4.17 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use or “PPU” factor, based on the total number of minutes of Traffic that each Party originates over the Two-Way Interconnection Trunks. D&E will pay a percentage of Verizon’s monthly recurring charges for the facility on which the Two-Way Interconnection Trunks ride equal to D&E’s percentage of use of the facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on D&E’s side of D&E’s-IP, which charges shall be solely the financial responsibility of D&E. Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the Trunks on Verizon’s side of the D&E-IP, the non-recurring charges shall be divided equally between the Parties; and, (b) for the portion of the Trunks on D&E’s side of the D&E-IP, D&E shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.18, if D&E fails to provide IPs in accordance with Section 7.1 of this Agreement, D&E will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Interconnection Trunk groups until D&E establishes such IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two2.3.1 Interconnection will be provided via two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoyway trunks. Everstream, at its own expense, shall: 2.4.1.1 2.3.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 2.3.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 2.3.2 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Everstream shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. The mutually agreed upon technical and operational interfaces, procedures, grade of service and performance standards for Interconnection between the Parties will conform with all generally accepted industry standards with regard to facilities, equipment, and services. All Interconnection facilities and trunking will be ordered using industry standard ASR as referenced at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. 2.3.3 Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On 2.3.4 In addition to the forecasting requirements described in Section 14.2, on a semi-annual basis, Onvoy Everstream shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Everstream anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Everstream and Frontier. OnvoyEverstream’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines Trunk Forecast template at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. Orders for trunks that exceed forecasted quantities for forecasted locations will be accommodated as in effect at that timefacilities and/or equipment are available. 2.4.5 2.3.4.1 The forecasts will include the number, type and capacity of trunks as well as a description of major network projects anticipated for the following six months. Major network projects include trunking or network rearrangements, shifts in anticipated traffic patterns, or other activities that are reflected by a significant increase or decrease in trunking demand for the following forecast period. 2.3.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Two- Way Interconnection Trunks. 2.4.6 2.3.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. For glare resolution, Frontier will have priority on odd trunk group member circuit identification codes, and Everstream will have priority on even trunk group member circuit identification codes, unless otherwise mutually agreed. 2.4.7 2.3.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.3.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy Everstream shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-SR- TSV-002275). 2.4.9 2.3.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy 2.3.10 Everstream shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy Everstream shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Everstream shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 2.3.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy Everstream has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy Everstream a Trunk Group Service Request directing Onvoy Everstream to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Everstream will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 2.3.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Everstream will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Everstream will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Everstream fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy Everstream shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 2.3.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyEverstream’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy 2.3.14 Everstream will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy Everstream to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy Everstream and the Frontier End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCost Plus, OnvoyCost Plus, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier Verizon access Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCost Plus, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Cost Plus shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Cost Plus shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Cost Plus anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Cost Plus and FrontierVerizon. OnvoyCost Plus’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Cost Plus shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two Way Interconnection Trunks, prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Rhythms shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds CCS (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One(POI). 2.4.2 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to Two-Way Interconnection Trunksa mutually agreed upon POI. Where the Rhythms is collocated in a Verizon Wire Center, the POI shall be at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection TrunksVerizon Wire Center. 2.4.4 2.4.3 On a semi-annual basis, Onvoy Rhythms shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Rhythms anticipates Frontier that Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontierperiod. Onvoy’s Rhythms' trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 2.4.4 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 2.4.5 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 2.4.6 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) CCS equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.4.7 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.005 during the average time consistent busy hour; Two-Way Interconnection Trunk groups that connect to a Verizon Tandem shall be engineered using a design blocking objective of Xxxx Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Rhythms shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275)national standards. 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy 2.4.8 Rhythms shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy Rhythms shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Rhythms shall complete ASRs in accordance with OBF Ordering and Billing Forum Guidelines as in effect from time to time. 2.4.11 Frontier 2.4.9 Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-final Two- Way Interconnection Trunk group and Onvoy Rhythms has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy Rhythms a Trunk Group Service Request directing Onvoy Rhythms to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Rhythms will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.10 Any Tandem Two-Way Interconnection Trunk group between the Rhythms' POI and a Verizon Tandem will be limited to a maximum of 240 trunks unless otherwise agreed to by the Parties. In the event that any Tandem Two-Way Interconnection Trunk group exceeds the 240 trunk level at any time, Rhythms shall promptly submit an ASR to Verizon to establish new or additional End Office Trunk groups to insure that such Tandem Two-Way Interconnection Trunk group does not exceed the 240 trunk level. 2.4.11 Upon request, Rhythms will submit a written report to Verizon each month setting forth trunk utilization information and percentages. Rhythms will calculate utilization percentages by using a traffic data analyzation system specified by Verizon, industry standard study periods and a time consistent busy hour. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Rhythms will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Rhythms will promptly submit ASRs to disconnect a sufficient number of Local Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Rhythms fails to submit an ASR for Two-Two- Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) Rhythms for the excess Local Interconnection Trunks at the applicable Frontier ratesrates provided for in the Pricing Attachment. 2.4.13 The performance standard on final Two-Way Interconnection Trunks shall be that no such Local Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.14 Because Frontier Verizon will not be in control of when the timing and how many sizing of the Two-Way Interconnection Trunks are established between its network and Onvoy’s Rhythms' network, FrontierVerizon’s performance in connection with on these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- tocarrier-to- carrier performance assurance guidelines or plan. 2.4.14 Onvoy 2.4.15 Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the applicable POI. 2.4.16 Notwithstanding any other provision of this Agreement, Two-Way Interconnection Trunks shall only carry Reciprocal Compensation Traffic IntraLATA Toll Traffic and Internet Traffic. 2.4.17 Rhythms will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191SR- TAP192, including but not limited to those standards requiring that a call from Onvoy Rhythms to a Frontier Verizon End Office will first be routed to the End Office Local Interconnection Trunk group between Onvoy Rhythms and the Frontier Verizon End Office. 2.4.18 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use or “PPU” factor, based on the total number of minutes of Traffic that each Party originates over the Two-Way Interconnection Trunks. Rhythms will pay a percentage of Verizon’s monthly recurring charges for the facility on which the Two-Way Interconnection Trunks ride equal to Rhythms' percentage of use of the facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on Rhythms' side of Rhythms'-IP, which charges shall be solely the financial responsibility of Rhythms. Non- recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the Trunks on Verizon’s side of the Rhythms-IP, the non- recurring charges shall be divided equally between the Parties; and,

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyENT, OnvoyENT, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier Verizon access Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyENT, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy ENT shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy ENT shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy ENT anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy ENT and FrontierVerizon. OnvoyENT’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy ENT shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyNUI, OnvoyNUI shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility, on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with the rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontierterms and conditions set forth in this Agreement and Verizon’s network in a LATAapplicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy NUI shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy NUI shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy NUI anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from NUI to Verizon and Frontierfrom Verizon to NUI. OnvoyNUI’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy NUI shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy NUI shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy NUI shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy NUI shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy NUI has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy NUI a Trunk Group Service Request directing Onvoy NUI to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy NUI will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(sGroup(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy NUI will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy NUI will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy NUI fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx NUI for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyNUI’s network, FrontierVerizon’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two-Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non-complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the non-complying Party’s relevant POI. 2.4.15 NUI will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy NUI to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy NUI and the Frontier Verizon End Office. 2.4.16 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use (“PPU”) factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. NUI will pay a percentage of Verizon’s monthly recurring charges for each facility on which the Two-Way Interconnection Trunks ride equal to NUI’s percentage of use of that facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on NUI’s side of NUI’s-IP, which charges shall be solely the financial responsibility of

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyNexGen, OnvoyNexGen, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier Verizon access Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyNexGen, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy NexGen shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy NexGen shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy NexGen anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy NexGen and FrontierVerizon. OnvoyNexGen’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy NexGen shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCBB, OnvoyCBB, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier access this Agreement or an applicable Verizon Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCBB, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CBB shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy CBB shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy CBB anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy CBB and FrontierVerizon. OnvoyCBB’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxx- Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy CBB shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy CBB shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy CBB shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy CBB shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy CBB has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy CBB a Trunk Group Service Request directing Onvoy CBB to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy CBB will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy CBB will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy CBB will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy CBB fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier Verizon may disconnect the excess Interconnection Trunks or bill xxxx (and Onvoy CBB shall pay) for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when and how many Two-Two- Way Interconnection Trunks are established between its network and OnvoyCBB’s network, FrontierVerizon’s performance in connection with these Two-Two- Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy CBB will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy CBB to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy CBB and the Frontier Verizon End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two2.3.1 Interconnection will be provided via two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoyway trunks. Carrier, at its own expense, shall: 2.4.1.1 2.3.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 2.3.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 2.3.2 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Carrier shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. The mutually agreed upon technical and operational interfaces, procedures, grade of service and performance standards for Interconnection between the Parties will conform with all generally accepted industry standards with regard to facilities, equipment, and services. All Interconnection facilities and trunking will be ordered using industry standard ASR as referenced at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. 2.3.3 Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On 2.3.4 In addition to the forecasting requirements described in Section 14.2, on a semi-annual basis, Onvoy Carrier shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Carrier anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Carrier and Frontier. OnvoyCarrier’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines Trunk Forecast template at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. Orders for trunks that exceed forecasted quantities for forecasted locations will be accommodated as in effect at that timefacilities and/or equipment are available. 2.4.5 2.3.4.1 The forecasts will include the number, type and capacity of trunks as well as a description of major network projects anticipated for the following six months. Major network projects include trunking or network rearrangements, shifts in anticipated traffic patterns, or other activities that are reflected by a significant increase or decrease in trunking demand for the following forecast period. 2.3.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Two- Way Interconnection Trunks. 2.4.6 2.3.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. For glare resolution, Frontier will have priority on odd trunk group member circuit identification codes, and Carrier will have priority on even trunk group member circuit identification codes, unless otherwise mutually agreed. 2.4.7 2.3.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.3.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy Carrier shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 2.3.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy 2.3.10 Carrier shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy Carrier shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Carrier shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 2.3.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy Carrier has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy Carrier a Trunk Group Service Request directing Onvoy Carrier to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Carrier will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 2.3.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Xxxxxxx will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Carrier will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Carrier fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy Carrier shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 2.3.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyCarrier’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy 2.3.14 Carrier will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Two- Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy Carrier to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy Carrier and the Frontier End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyVoxbeam, OnvoyVoxbeam, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier Verizon access Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyVoxbeam, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Voxbeam shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Voxbeam shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Voxbeam anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Voxbeam and FrontierVerizon. OnvoyVoxbeam’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 X.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Voxbeam shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyGNAPs, OnvoyGNAPs shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Two- Way Interconnection Trunks and the Entrance Facility, on Frontierwhich such Trunks will ride, and transport and multiplexing, in accordance with the rates, terms and conditions set forth in this Agreement and Verizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontierapplicable Tariffs. 2.4.2 Where the Parties use Prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy GNAPs shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and GNAPs shall order the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks it requires and will provide Verizon and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to the GNAPs’ designated a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy each Party GNAPs shall submit a good faith forecast to Frontier the other Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy it GNAPs anticipates Frontier that the other Party Verizon will need to provide for the next during the ensuing two (2) year period for period. to carry traffic from GNAPs to Verizon and from Verizon to GNAPs. GNAPs in its good faith performance of its obligations according to the exchange of traffic between Onvoy and Frontier. OnvoyAgreement shall provide ’s trunk forecasts in a reasonably complete manner sufficient to allow Verizon to review, process, and prepare for such trunk forecasts. shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. GNAPs will use reasonable efforts to provide forecasting according to Verizon’s reasonable forecasting guidelines as in effect at that time and Verizon will not refuse to accept, process, and act upon any such trunk forecast that substantially complies with Verizon’s reasonable and non-discriminatory trunk forecasting guidelines then in effect unless and only unless Verizon proves that GNAPs provided information that materially alters the accuracy of the information GNAPs sought to provide in the trunk forecast. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where availableavailable and where technically feasible. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 B.0051 during the average time consistent busy hour. Frontier Verizon and Onvoy GNAPs shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as accepted industry standards. BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for one three (1 3) consecutive calendar traffic study months. 2.4.10 Onvoy GNAPs shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy GNAPs shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy GNAPs shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. Verizon shall reasonably accept ASRs submitted by GNAPs and shall use commercially reasonable efforts to insure timely installation and activation of such Two-Way Local Interconnection Trunks. 2.4.11 Frontier Verizon may (but shall not be obligated to) Each Party will monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier a Party Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy the originating Party GNAPs has not notified Frontier the receiving Party Verizon that it has corrected such blocking, Frontier the receiving Party Verizon may submit to Onvoy the originating Party GNAPs a Trunk Group Service Request directing Onvoy the originating Party GNAPs to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy the originating Party GNAPs will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier the receiving Party Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy GNAPs will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy GNAPs fails to submit an ASR for Two-Two- Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) GNAPs for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCSTC, OnvoyCSTC, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third third-party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier access this Agreement or an applicable Verizon Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCSTC, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CSTC shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy CSTC shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy CSTC anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy CSTC and FrontierVerizon. OnvoyCSTC’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy CSTC shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 1. Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCinergy, OnvoyCinergy shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Two- Way Interconnection Trunks and the Entrance Facility, on Frontierwhich such Trunks will ride, and transport and multiplexing, in accordance with the rates, terms and conditions set forth in this Agreement and Verizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontierapplicable Tariffs. 2.4.2 Where the Parties use 2. Prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Cinergy shall meet with Frontier Verizon to conduct a joint planning meeting (“"Joint Planning Meeting”"). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 3. Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 4. On a semi-annual basis, Onvoy Cinergy shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Cinergy anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from Cinergy to Verizon and Frontierfrom Verizon to Cinergy. OnvoyCinergy’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 5. The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 6. Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 7. With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 8. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Cinergy shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 9. The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy 10. Cinergy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy Cinergy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Cinergy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier 11. Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy Cinergy has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy Cinergy a Trunk Group Service Request directing Onvoy Cinergy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Cinergy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 12. The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Cinergy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Cinergy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Cinergy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx Cinergy for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 13. Because Frontier Verizon will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyCinergy’s network, FrontierVerizon’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy 14. Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two-Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non-complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the non-complying Party’s relevant POI. 15. Cinergy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy Cinergy to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy Cinergy and the Frontier Verizon End Office. 16. When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use ("PPU") factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. Cinergy will pay a percentage of Verizon’s monthly recurring charges for each facility on which the Two-Way Interconnection Trunks ride equal to Cinergy’s percentage of use of that facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on Cinergy’s side of Cinergy’s-IP, which charges shall be solely the financial responsibility of Cinergy. During the first full calendar quarter (and any partial calendar quarter preceding such first full calendar quarter) after the first Two-Way Interconnection Trunk is established on a facility, the PPU for that facility will be fifty percent (50%) for each Party. For each calendar quarter thereafter, the Parties shall recalculate the PPU using actual traffic usage data for the preceding calendar quarter. Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the facility on Verizon’s side of the Cinergy-IP, Cinergy shall pay fifty percent (50%) of the Verizon non-recurring charges; and, (b) for the portion of the facility on Cinergy’s side of the Cinergy-IP, Cinergy shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.16, if Cinergy fails to provide Cinergy-IPs in accordance with this Agreement, Cinergy will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Interconnection Trunk groups until Cinergy establishes such Cinergy-IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCiera, OnvoyCiera shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility, on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with the rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontierterms and conditions set forth in this Agreement and Verizon’s network in a LATAapplicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy Ciera shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy Ciera shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Ciera anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from Ciera to Verizon and Frontierfrom Verizon to Ciera. OnvoyCiera’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Two- Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxx- Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Ciera shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy Ciera shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy Ciera shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Ciera shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy Ciera has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy Ciera a Trunk Group Service Request directing Onvoy Ciera to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Ciera will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Ciera will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Ciera will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Ciera fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx Xxxxx for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyCiera’s network, FrontierVerizon’s performance in connection with these Two-Two- Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two- Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non- complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the non- complying Party’s relevant POI. 2.4.15 Ciera will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy Ciera to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy Ciera and the Frontier Verizon End Office. 2.4.16 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use (“PPU”) factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. Ciera will pay a percentage of Verizon’s monthly recurring charges for each facility on which the Two-Way Interconnection Trunks ride equal to Ciera’s percentage of use of that facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on Ciera’s side of Ciera’s-IP, which charges shall be solely the financial responsibility of Ciera. During the first full calendar quarter (and any partial calendar quarter preceding such first full calendar quarter) after the first Two- Way Interconnection Trunk is established on a facility, the PPU for that facility will be fifty percent (50%) for each Party. For each calendar quarter thereafter, the Parties shall recalculate the PPU using actual traffic usage data for the preceding calendar quarter. Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the facility on Verizon’s side of the Ciera-IP, Ciera shall pay fifty percent (50%) of the Verizon non-recurring charges; and, (b) for the portion of the facility on Ciera’s side of the Ciera-IP, Ciera shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.16, if Ciera fails to provide Ciera-IPs in accordance with this Agreement, Ciera will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Interconnection Trunk groups until Ciera establishes such Ciera-IPs.

Two-Way Interconnection Trunks. 2.4.1 2.3.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyDISH Wireless, OnvoyDISH Wireless, at its own expense, shall: 2.4.1.1 2.3.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 2.3.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a this Agreement or an applicable Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 2.3.2 Prior to establishing any Two-Way Interconnection Trunks, Onvoy DISH Wireless shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. The mutually agreed upon technical and operational interfaces, procedures, grade of service and performance standards for Interconnection between the Parties will conform with all generally accepted industry standards with regard to facilities, equipment, and services. All Interconnection facilities and trunking will be ordered using industry standard ASR as referenced at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. 2.3.3 Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On 2.3.4 In addition to the forecasting requirements described in Section 14.2, on a semi-annual basis, Onvoy DISH Wireless shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy DISH Wireless anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy DISH Wireless and Frontier. OnvoyDISH Wireless’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines Trunk Forecast template at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. Orders for trunks that exceed forecasted quantities for forecasted locations will be accommodated as in effect at that timefacilities and/or equipment are available. 2.4.5 2.3.4.1 The forecasts will include the number, type and capacity of trunks as well as a description of major network projects anticipated for the following six months. Major network projects include trunking or network rearrangements, shifts in anticipated traffic patterns, or other activities that are reflected by a significant increase or decrease in trunking demand for the following forecast period. 2.3.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 2.3.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. For glare resolution, Frontier will have priority on odd trunk group member circuit identification codes, and DISH Wireless will have priority on even trunk group member circuit identification codes, unless otherwise mutually agreed. 2.4.7 2.3.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.3.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 X.01 during the average time consistent busy hour. Frontier and Onvoy DISH Wireless shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 2.3.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design design-blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyXxxx Tell, OnvoyXxxx Tell, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyXxxx Tell, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Xxxx Tell shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Xxxx Tell shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Xxxx Tell anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Xxxx Tell and Frontier. OnvoyXxxx Tell ’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy Xxxx Tell shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier PRTC and OnvoyCSPR, OnvoyCSPR, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierPRTC’s network in a LATAnetwork; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierPRTC’s network in a LATA (a) from a third third-party, or, (b) if Frontier PRTC offers such transport pursuant to a Frontier access this Agreement or an applicable PRTC Tariff, from FrontierPRTC. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier PRTC and OnvoyCSPR, FrontierPRTC, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierPRTC’s network in a LATAnetwork. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CSPR shall meet with Frontier PRTC to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy shall submit a good faith forecast to Frontier of Where the number of End Office and Tandem Parties use Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic, CSPR and PRTC shall negotiate a mutually agreed-to forecast of expected traffic between Onvoy and Frontieron an annual basis. Onvoy’s trunk forecasts shall conform If CSPR fails to utilize the Frontier CLEC trunk forecasting guidelines as in effect trunks at that timea level of at least sixty (60) percent of the forecasted level over a 12-month period, the parties will proceed under Section 11.2.2 of this Attachment. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. Where ESF/B8ZS is not available, CSPR agrees to use other interconnection protocols reasonably acceptable to PRTC. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, a service standard is based on reasonable engineering criteria average Time Consistent Busy Hour (TCBH), busy season originating attempts and capacity constraints, are not warranted by the actual traffic volume experiencedoverflows as defined in Telcordia document SR-TAP-000191 entitled Trunk Traffic Engineering Concepts and Applications. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier PRTC access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier PRTC local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier PRTC and Onvoy CSPR shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.SR-002275

Two-Way Interconnection Trunks. 2.4.1 2.3.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyINdigital, OnvoyINdigital, at its own expense, shall: 2.4.1.1 2.3.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 2.3.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 2.3.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyINdigital, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 2.3.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy INdigital shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 2.3.4 On a semi-annual basis, Onvoy INdigital shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy INdigital anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy INdigital and Frontier. OnvoyINdigital’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 2.3.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 2.3.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 2.3.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.3.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy INdigital shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 2.3.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyFutiva, OnvoyFutiva, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyFutiva, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Futiva shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Futiva shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Futiva anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Futiva and Frontier. OnvoyFutiva’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy Futiva shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyTalk America, OnvoyTalk America, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier Verizon access Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyTalk America, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Talk America shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Talk America shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Talk America anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Talk America and FrontierVerizon. OnvoyTalk America’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Talk America shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyBullsEye, OnvoyBullsEye shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility, on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with the rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontierterms and conditions set forth in this Agreement and Verizon’s network in a LATAapplicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy BullsEye shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy BullsEye shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy BullsEye anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from BullsEye to Verizon and Frontierfrom Verizon to BullsEye. OnvoyBullsEye’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Two- Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxx- Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy BullsEye shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy BullsEye shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy BullsEye shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy BullsEye shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy BullsEye has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy BullsEye a Trunk Group Service Request directing Onvoy BullsEye to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy BullsEye will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(sGroup(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy BullsEye will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy BullsEye will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy BullsEye fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx BullsEye for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyBullsEye’s network, FrontierVerizon’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two- Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non- complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group between Onvoy and install One-Way Interconnection Trunks to the Frontier End Officenon- complying Party’s relevant POI.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyDSCI, OnvoyDSCI shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility, on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with the rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontierterms and conditions set forth in this Agreement and Verizon’s network in a LATAapplicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy DSCI shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy DSCI shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy DSCI anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from DSCI to Verizon and Frontierfrom Verizon to DSCI. OnvoyDSCI’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time.time.‌‌‌‌‌‌‌ 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy DSCI shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-SR- TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyCLC, OnvoyCLC, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyCLC, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CLC shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy CLC shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy CLC anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy CLC and Frontier. OnvoyCLC’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy CLC shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two2.3.1 Interconnection will be provided via two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoyway trunks. CTSI, at its own expense, shall: 2.4.1.1 2.3.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 2.3.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 2.3.2 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CTSI shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. The mutually agreed upon technical and operational interfaces, procedures, grade of service and performance standards for Interconnection between the Parties will conform with all generally accepted industry standards with regard to facilities, equipment, and services. All Interconnection facilities and trunking will be ordered using industry standard ASR as referenced at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. 2.3.3 Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On 2.3.4 In addition to the forecasting requirements described in Section 14.2, on a semi-annual basis, Onvoy CTSI shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy CTSI anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy CTSI and Frontier. OnvoyCTSI’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines Trunk Forecast template at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. Orders for trunks that exceed forecasted quantities for forecasted locations will be accommodated as in effect at that timefacilities and/or equipment are available. 2.4.5 2.3.4.1 The forecasts will include the number, type and capacity of trunks as well as a description of major network projects anticipated for the following six months. Major network projects include trunking or network rearrangements, shifts in anticipated traffic patterns, or other activities that are reflected by a significant increase or decrease in trunking demand for the following forecast period. 2.3.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 2.3.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. For glare resolution, Frontier will have priority on odd trunk group member circuit identification codes, and CTSI will have priority on even trunk group member circuit identification codes, unless otherwise mutually agreed. 2.4.7 2.3.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.3.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy CTSI shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 2.3.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyBullsEye, OnvoyBullsEye shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility, on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with the rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontierterms and conditions set forth in this Agreement and Verizon’s network in a LATAapplicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy BullsEye shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Meet Point A (high usage) and Meet Point B (final) Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy BullsEye shall submit a good faith forecast to Frontier Verizon of the number of End Office Meet Point A (high usage) and Tandem Meet Point B (final) Two-Way Interconnection Trunks that Onvoy BullsEye anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from BullsEye to Verizon and Frontierfrom Verizon to BullsEye. OnvoyBullsEye’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office Meet Point A (high usage) and Tandem Meet Point B (final) Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Meet Point A (high usage) Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Meet Point B Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Meet Point B Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy BullsEye shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-SR- TSV-002275). 2.4.9 The performance standard for final Meet Point B Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy BullsEye shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy BullsEye shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy BullsEye shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Meet Point B (final) Two-Way Interconnection Trunk group and Onvoy BullsEye has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy BullsEye a Trunk Group Service Request directing Onvoy BullsEye to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy BullsEye will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(sGroup(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Meet Point B Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy BullsEye will promptly augment all Tandem Meet Point B Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Meet Point B Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy BullsEye will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy BullsEye fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx BullsEye for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyBullsEye’s network, FrontierVerizon’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two- Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non- complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the non- complying Party’s relevant POI. 2.4.15 BullsEye will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Meet Point A and/or Meet Point B Two-Way Interconnection Trunks in accordance with SR-SR- TAP-000191, including but not limited to those standards requiring that a call from Onvoy BullsEye to a Frontier Verizon End Office will first be routed to the End Office Meet Point A Interconnection Trunk group between Onvoy BullsEye and the Frontier Verizon End Office. 2.4.16 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use (“PPU”) factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. BullsEye will pay a percentage of Verizon’s monthly recurring charges for each facility on which the Two-Way Interconnection Trunks ride equal to BullsEye’s percentage of use of that facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on BullsEye’s side of BullsEye’s-IP, which charges shall be solely the financial responsibility of BullsEye. During the first full calendar quarter (and any partial calendar quarter preceding such first full calendar quarter) after the first Two-Way Interconnection Trunk is established on a facility, the PPU for that facility will be fifty percent (50%) for each Party. For each calendar quarter thereafter, the Parties shall recalculate the PPU using actual traffic usage data for the preceding calendar quarter. Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the facility on Verizon’s side of the BullsEye-IP, BullsEye shall pay fifty percent (50%) of the Verizon non-recurring charges; and, (b) for the portion of the facility on BullsEye’s side of the BullsEye-IP, BullsEye shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.16, if BullsEye fails to provide BullsEye-IPs in accordance with this Agreement, BullsEye will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Interconnection Trunk groups until BullsEye establishes such BullsEye-IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyDelta Phones, OnvoyDelta Phones shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Two- Way Interconnection Trunks and the Entrance Facility, on Frontierwhich such Trunks will ride, and transport and multiplexing, in accordance with the rates, terms and conditions set forth in this Agreement and Verizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontierapplicable Tariffs. 2.4.2 Where the Parties use Prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Delta Phones shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy Delta Phones shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Delta Phones anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from Delta Phones to Verizon and Frontierfrom Verizon to Delta Phones. OnvoyDelta Phones’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Delta Phones shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyAccess Point, OnvoyAccess Point shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Two- Way Interconnection Trunks and the Entrance Facility, on Frontierwhich such Trunks will ride, and transport and multiplexing, in accordance with the rates, terms and conditions set forth in this Agreement and Verizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontierapplicable Tariffs. 2.4.2 Where the Parties use Prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Access Point shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy Access Point shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Access Point anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from Access Point to Verizon and Frontierfrom Verizon to Access Point. OnvoyAccess Point’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 X.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Access Point shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyEdnetics, OnvoyEdnetics, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyEdnetics, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Ednetics shall meet with Frontier to conduct a joint planning meeting (“Joint ―Joint Planning Meeting”Meeting‖). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Ednetics shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Ednetics anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Ednetics and Frontier. OnvoyEdnetics’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy Ednetics shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontier. Onvoy’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyINA, OnvoyINA, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyINA, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy INA shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy INA shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy INA anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy INA and Frontier. OnvoyINA’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy INA shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Two Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoySBCT, OnvoySBCT shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility (SBCT may obtain the entrance facility from a third party provider), on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network terms and conditions set forth in a LATAthis Agreement and Verizon's applicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy SBCT shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, if available, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or 2.4.4 On a semi-annual basis, Onvoy SBCT shall submit a good faith forecast to Frontier Verizon of the number of the End Office and Tandem Two-Way Interconnection Trunks that Onvoy SBCT anticipates Frontier that Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from SBCT to Verizon and Frontierfrom Verizon to SBCT. OnvoySBCT’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Two- Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxx- Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy SBCT shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275)TSV-002275 and Xxxx Communications Research, Inc. (TELCORDIA TECHNOLOGIES) document SR TAP 000191 – Trunk Traffic Engineering Concepts and Applications. 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy The Parties shall determine mutually agree upon and SBCT shall order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Two- Way Interconnection Trunk group. Onvoy SBCT shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy SBCT shall complete ASRs in accordance with OBF Ordering and Billing Forum Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy SBCT has not notified Frontier Verizon that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days.corrected 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy SBCT will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy SBCT will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy SBCT fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx SBCT for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when the timing and how many sizing of the Two-Way Interconnection Trunks that are established between its network and OnvoySBCT’s network, FrontierVerizon’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, except for unexcused missed installation appointments, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the other Party's relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two-Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non-complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the non-complying Party's relevant POI. 2.4.15 SBCT will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy SBCT to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy SBCT and the Frontier Verizon End Office. 2.4.16 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use (“PPU”) factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. SBCT will pay a percentage of Verizon’s monthly Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the facility on Verizon’s side of the SBCT-IP, SBCT shall pay fifty percent (50%) of the Verizon non-recurring charges; and, (b) for the portion of the facility on SBCT’s side of the SBCT-IP, SBCT shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.16, if SBCT fails to provide SBCT-IPs in accordance with this Agreement, SBCT will be responsible for one hundred percent (100%) of all recurring and non- recurring charges associated with Two-Way Interconnection Trunk groups until SBCT establishes such SBCT-IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyGNAPS, OnvoyGNAPS shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Two- Way Interconnection Trunks and the Entrance Facility, on Frontierwhich such Trunks will ride, and transport and multiplexing, in accordance with the rates, terms and conditions set forth in this Agreement and Verizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontierapplicable Tariffs. 2.4.2 Where the Parties use Prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy GNAPS shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Meet Point A (high usage) and Meet Point B (final) Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Pursuant to the Arbitration Order, Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to the GNAPs- designated POI. 2.4.4 On a semi-annual basis, Onvoy GNAPS shall submit a good faith forecast to Frontier Verizon of the number of End Office Meet Point A (high usage) and Tandem Meet Point B (final) Two-Way Interconnection Trunks that Onvoy GNAPS anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from GNAPS to Verizon and Frontierfrom Verizon to GNAPS. OnvoyGNAPS’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office Meet Point A (high usage) and Tandem Meet Point B (final) Two-Way Local Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Local Interconnection Trunks. 2.4.6 Pursuant to the Arbitration Order, Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where availableavailable and where technically feasible. 2.4.7 With respect to End Office Meet Point A (high usage Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Meet Point B Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Meet Point B Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy GNAPS shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-SR- TSV-002275). 2.4.9 The performance standard for final Meet Point B Two-Way Interconnection Trunk groups Trunks shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy GNAPS shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy GNAPS shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy GNAPS shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. Pursuant to the Arbitration Order, Verizon shall reasonably accept ASRs submitted by GNAPs and shall use commercially reasonable efforts to insure timely installation and activation of such Two-Way Interconnection Trunks. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Meet Point B (final) Two-Way Interconnection Trunk group and Onvoy GNAPS has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy GNAPS a Trunk Group Service Request directing Onvoy GNAPS to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy GNAPS will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Meet Point B Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy GNAPS will promptly augment all Tandem Meet Point B Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Meet Point B Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy GNAPS will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy GNAPS fails to submit an ASR for Two-Two- Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx GNAPS for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier will not be in control [Intentionally left blank pursuant to the Arbitration Order.] 2.4.14 Upon three (3) months prior written notice and with the mutual agreement of when and how many Two-Way Interconnection Trunks are established between the Parties, either Party may withdraw its network and Onvoy’s network, Frontier’s performance in connection with these traffic from a Two-Way Interconnection Trunk groups shall not be subject group and install One-Way Interconnection Trunks to any performance measurements the other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two- Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and remedies under this Agreementwithout mutual agreement of the non- complying Party, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- towithdraw its traffic from a Two-carrier performance assurance guidelines or planWay Interconnection Trunk group and install One-Way Interconnection Trunks to the non- complying Party’s relevant POI. 2.4.14 Onvoy 2.4.15 GNAPS will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Meet Point A and/or Meet Point B Two-Way Interconnection Trunks in accordance with SR-SR- TAP-000191, including but not limited to those standards requiring that a call from Onvoy GNAPS to a Frontier Verizon End Office will first be routed to the End Office Meet Point A Interconnection Trunk group between Onvoy GNAPS and the Frontier Verizon End Office. 2.4.16 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use (“PPU”) factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. GNAPS will pay a percentage of Verizon’s monthly recurring charges for each facility on which the Two-Way Interconnection Trunks ride equal to GNAPS’s percentage of use of that facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on GNAPS’s side of GNAPS’s-IP, which charges shall be solely the financial responsibility of GNAPS. During the first full calendar quarter (and any partial calendar quarter preceding such first full calendar quarter) after the first Two-Way Interconnection Trunk is established on a facility, the PPU for that facility will be fifty percent (50%) for each Party. For each calendar quarter thereafter, the Parties shall recalculate the PPU using actual traffic usage data for the preceding calendar quarter. Pursuant to the Arbitration Order, non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned equally. Notwithstanding the foregoing provisions of this Section 2.4.16, if GNAPS fails to provide GNAPS-IPs in accordance with this Agreement, GNAPS will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Interconnection Trunk groups until GNAPS establishes such GNAPS-IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Onvoy, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontier. Onvoy’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCenturyLink, OnvoyCenturyLink, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATAEAB Location(s); and/or 2.4.1.2 obtain transport facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (aEAB Locations(s) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyCenturyLink, FrontierVerizon, at its own expense, shall shall: 2.4.2.1 provide its own facilities to the technically feasible Point(sEAB Locations(s); and/or 2.4.2.2 obtain facilities to the EAB Location(s) of Interconnection on Frontier’s network in from a LATAthird party. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CenturyLink shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(sEAB Location(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On Since the Parties have a longstanding traffic history, on an as needed basis but no less frequently than semi-annual basisannually, Onvoy the Parties shall submit meet and provide to each other a good faith trunk forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide be needed during the ensuing two (2) year period for the exchange of traffic between Onvoy CenturyLink and FrontierVerizon. OnvoyCenturyLink’s trunk forecasts shall conform to the Frontier CLEC Verizon trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling, where available. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Verizon Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy CenturyLink shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 SR-2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its the B.005 design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy The Parties shall determine and establish, via a mutually agreed order documents, the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but Both Parties shall not be obligated to) monitor the Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier either Party observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blockingblocking objective, Frontier may submit the Parties will promptly take action to Onvoy a Trunk Group Service Request directing Onvoy to remedy expedite resolution of the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Dayssituation. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy The Parties will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for establishing additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy the Parties will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Each Party will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier the other Party over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-SR- TAP-000191, including but not limited to those standards requiring that a call from Onvoy Party A to a Frontier Party B End Office will first be routed to the End Office Interconnection Trunk group between Onvoy Party A and the Frontier Party B End Office.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyBuckeye, OnvoyBuckeye shall order from Verizon, at its own expenseand Verizon shall provide, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for and the exchange of traffic between Frontier Entrance Facility, on which such Trunks will ride, and Onvoytransport and multiplexing, Frontierin accordance with the rates, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontierterms and conditions set forth in this Agreement and Verizon’s network in a LATAapplicable Tariffs. 2.4.3 2.4.2 Prior to establishing ordering any Two-Way Interconnection TrunksTrunks from Verizon, Onvoy Buckeye shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two-Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy Buckeye shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Buckeye anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from Buckeye to Verizon and Frontierfrom Verizon to Buckeye. OnvoyBuckeye’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Two- Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxx- Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Buckeye shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy Buckeye shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy Buckeye shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier Verizon setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within FrontierVerizon’s effective standard intervals or negotiated intervals, as appropriate. Onvoy Buckeye shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier Verizon may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups Groups using service results for the applicable design blocking objective. If Frontier Verizon observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy Buckeye has not notified Frontier Verizon that it has corrected such blocking, Frontier Verizon may submit to Onvoy Buckeye a Trunk Group Service Request directing Onvoy Buckeye to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy Buckeye will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group Group with excessive blocking and submit the ASR to Frontier Verizon within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy Buckeye will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Two-Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy Buckeye will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy Buckeye fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Sectionsection, Frontier Verizon may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) xxxx Buckeye for the excess Interconnection Trunks at the applicable Frontier Verizon rates. 2.4.13 Because Frontier Verizon will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and OnvoyBuckeye’s network, FrontierVerizon’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- carrier-to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy Upon three (3) months prior written notice and with the mutual agreement of the Parties, either Party may withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the other Party’s relevant POI, provided that, if a Party has failed to comply with this Agreement with regard to Two- Way Interconnection Trunks, the other Party may upon three (3) months prior written notice and without mutual agreement of the non- complying Party, withdraw its traffic from a Two-Way Interconnection Trunk group and install One-Way Interconnection Trunks to the non- complying Party’s relevant POI. 2.4.15 Buckeye will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier Verizon over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy Buckeye to a Frontier Verizon End Office will first be routed to the End Office Interconnection Trunk group between Onvoy Buckeye and the Frontier Verizon End Office. 2.4.16 When the Parties implement Two-Way Interconnection Trunks, the Parties will work cooperatively to calculate a Proportionate Percentage of Use (“PPU”) factor for each facility on which the Two-Way Interconnection Trunks ride, based on the total number of minutes of traffic that each Party sends over the Two-Way Interconnection Trunks riding on that facility. Buckeye will pay a percentage of Verizon’s monthly recurring charges for each facility on which the Two-Way‌ Interconnection Trunks ride equal to Buckeye’s percentage of use of that facility as shown by the PPU. The PPU shall not be applied to calculate the charges for any portion of a facility that is on Buckeye’s side of Buckeye’s-IP, which charges shall be solely the financial responsibility of Buckeye. During the first full calendar quarter (and any partial calendar quarter preceding such first full calendar quarter) after the first Two-Way Interconnection Trunk is established on a facility, the PPU for that facility will be fifty percent (50%) for each Party. For each calendar quarter thereafter, the Parties shall recalculate the PPU using actual traffic usage data for the preceding calendar quarter. Non-recurring charges for the facility on which the Two-Way Interconnection Trunks ride shall be apportioned as follows: (a) for the portion of the facility on Verizon’s side of the Buckeye-IP, Buckeye shall pay fifty percent (50%) of the Verizon non-recurring charges; and, (b) for the portion of the facility on Buckeye’s side of the Buckeye- IP, Buckeye shall be solely responsible for the non-recurring charges. Notwithstanding the foregoing provisions of this Section 2.4.16, if Buckeye fails to provide Buckeye-IPs in accordance with this Agreement, Buckeye will be responsible for one hundred percent (100%) of all recurring and non-recurring charges associated with Two-Way Interconnection Trunk groups until Buckeye establishes such Buckeye-IPs.

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyAT&T Mobility, OnvoyAT&T Mobility, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third third-party, or, (b) if Frontier offers such transport pursuant to a this Agreement or an applicable Frontier access Tariff, from Frontier. 2.4.2 Where When AT&T Mobility orders Facilities from Frontier, AT&T shall be responsible for 70% of the recurring and non-recurring two-way facility and Frontier will be responsible for 30% of the recurring and non- recurring two-way facility. Up to two (2) times per year the Parties agree to review traffic volumes at a mutually agreeable time and adjust the billing percentages according to the then relative usage and formalize any change with an amendment to this Agreement. Any change to the relative use Twofactor will, pursuant to this Section 2.4.2 will be based on intraMTA traffic only. InterMTA traffic and transit traffic will not be taken into account when determining the relative usage on any two-Way Interconnection Trunks way facility. The Parties agree, AT&T will xxxx Frontier for the exchange portion of traffic between the facilities Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATAis responsible for. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy AT&T Mobility shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s 's network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy and Frontier. Onvoy’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time.This Section Intentionally Left Blank 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End End-Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design design-blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design design-blocking objective of Xxxx-Xxxx Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy AT&T Mobility shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 SR-2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design design-blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties have agreed to use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyNOW Communications, OnvoyInc., at its own expenseNOW Communications, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier.Inc. shall order from 2.4.2 Where the Parties use Prior to ordering any Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoyfrom Verizon, FrontierNOW Communications, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Inc. shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Centium Call Seconds Second (Hundred Call SecondsSecond) information, and the Parties shall mutually agree on the appropriate initial number of Two- Way End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) Point of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic(POI). Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.3 Two-Way Interconnection Trunks shall be from a Verizon End Office or Tandem to a mutually agreed upon POI. 2.4.4 On a semi-annual basis, Onvoy NOW Communications, Inc. shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Two- Way Interconnection Trunks that Onvoy NOW Communications, Inc. anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of to carry traffic between Onvoy from NOW Communications, Inc. to Verizon and Frontier. Onvoyfrom Verizon to NOW Communications, Inc.. NOW Communications, Inc.’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Centium Call Seconds Second (Hundred Call SecondsSecond) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Two- Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxx- Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier Verizon and Onvoy NOW Communications, Inc. shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-SR- TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.exceed

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyCCES, OnvoyCCES, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyCCES, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy CCES shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy CCES shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy CCES anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy CCES and Frontier. OnvoyCCES’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 X.01 during the average time consistent busy hour. Frontier and Onvoy CCES shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyTalk America, OnvoyTalk America, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA (a) from a third party, or, (b) if Frontier Verizon offers such transport pursuant to a Frontier Verizon access Tariff, from FrontierVerizon. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier Verizon and OnvoyTalk America, FrontierVerizon, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Talk America shall meet with Frontier Verizon to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on FrontierVerizon’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Talk America shall submit a good faith forecast to Frontier Verizon of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Talk America anticipates Frontier Verizon will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Talk America and FrontierVerizon. OnvoyTalk America’s trunk forecasts shall conform to the Frontier Verizon CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier Verizon access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier Verizon local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 X.01 during the average time consistent busy hour. Frontier Verizon and Onvoy Talk America shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyWVN, OnvoyWVN, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyWVN, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy WVN shall meet with Frontier to conduct a joint planning meeting (“Joint ―Joint Planning Meeting”Meeting‖). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy WVN shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy WVN anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy WVN and Frontier. OnvoyWVN’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy WVN shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 2.3.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyDISH Wireless, OnvoyDISH Wireless, at its own expense, shall: 2.4.1.1 2.3.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 2.3.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a this Agreement or an applicable Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and Onvoy, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 2.3.2 Prior to establishing any Two-Way Interconnection Trunks, Onvoy DISH Wireless shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. The mutually agreed upon technical and operational interfaces, procedures, grade of service and performance standards for Interconnection between the Parties will conform with all generally accepted industry standards with regard to facilities, equipment, and services. All Interconnection facilities and trunking will be ordered using industry standard ASR as referenced at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. 2.3.3 Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On 2.3.4 In addition to the forecasting requirements described in Section 14.2, on a semi-annual basis, Onvoy DISH Wireless shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy DISH Wireless anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy DISH Wireless and Frontier. OnvoyDISH Wireless’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines Trunk Forecast template at xxxxx://xxxxxxxxx.xxxxxxxx.xxx/wholesale/ under Access Services, then Access Reference Documents. Orders for trunks that exceed forecasted quantities for forecasted locations will be accommodated as in effect at that timefacilities and/or equipment are available. 2.4.5 2.3.4.1 The forecasts will include the number, type and capacity of trunks as well as a description of major network projects anticipated for the following six months. Major network projects include trunking or network rearrangements, shifts in anticipated traffic patterns, or other activities that are reflected by a significant increase or decrease in trunking demand for the following forecast period. 2.3.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 2.3.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. For glare resolution, Frontier will have priority on odd trunk group member circuit identification codes, and DISH Wireless will have priority on even trunk group member circuit identification codes, unless otherwise mutually agreed. 2.4.7 2.3.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 2.3.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy DISH Wireless shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 2.3.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design design-blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoySpectrotel, OnvoySpectrotel, at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoySpectrotel, Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy Spectrotel shall meet with Frontier to conduct a joint planning meeting (“Joint ―Joint Planning Meeting”Meeting‖). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy Spectrotel shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy Spectrotel anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy Spectrotel and Frontier. OnvoySpectrotel’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 B.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 during the average time consistent busy hour. Frontier and Onvoy Spectrotel shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three

Two-Way Interconnection Trunks. 2.4.1 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyTCG , OnvoyTCG , at its own expense, shall: 2.4.1.1 provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA; and/or 2.4.1.2 obtain transport to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA (a) from a third party, or, (b) if Frontier offers such transport pursuant to a Frontier access Tariff, from Frontier. 2.4.2 Where the Parties use Two-Way Interconnection Trunks for the exchange of traffic between Frontier and OnvoyTCG , Frontier, at its own expense, shall provide its own facilities to the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA. 2.4.3 Prior to establishing any Two-Way Interconnection Trunks, Onvoy TCG shall meet with Frontier to conduct a joint planning meeting (“Joint Planning Meeting”). At that Joint Planning Meeting, each Party shall provide to the other Party originating Centum Call Seconds (Hundred Call Seconds) information, and the Parties shall mutually agree on the appropriate initial number of End Office and Tandem Two-Way Interconnection Trunks and the interface specifications at the technically feasible Point(s) of Interconnection on Frontier’s network in a LATA at which the Parties interconnect for the exchange of traffic. Where the Parties have agreed to convert existing One-Way Interconnection Trunks to Two-Way Interconnection Trunks, at the Joint Planning Meeting, the Parties shall also mutually agree on the conversion process and project intervals for conversion of such One-One- Way Interconnection Trunks to Two-Way Interconnection Trunks. 2.4.4 On a semi-annual basis, Onvoy TCG shall submit a good faith forecast to Frontier of the number of End Office and Tandem Two-Way Interconnection Trunks that Onvoy TCG anticipates Frontier will need to provide during the ensuing two (2) year period for the exchange of traffic between Onvoy TCG and Frontier. OnvoyTCG ’s trunk forecasts shall conform to the Frontier CLEC trunk forecasting guidelines as in effect at that time. 2.4.5 The Parties shall meet (telephonically or in person) from time to time, as needed, to review data on End Office and Tandem Two-Way Interconnection Trunks to determine the need for new trunk groups and to plan any necessary changes in the number of Two-Way Interconnection Trunks. 2.4.6 Two-Way Interconnection Trunks shall have SS7 Common Channel Signaling. The Parties agree to utilize B8ZS and Extended Super Frame (ESF) DS1 facilities, where available. 2.4.7 With respect to End Office Two-Way Interconnection Trunks, both Parties shall use an economic Centum Call Seconds (Hundred Call Seconds) equal to five (5). Either Party may disconnect End Office Two-Way Interconnection Trunks that, based on reasonable engineering criteria and capacity constraints, are not warranted by the actual traffic volume experienced. 2.4.8 Two-Way Interconnection Trunk groups that connect to a Frontier access Tandem shall be engineered using a design blocking objective of Xxxx- Xxxx-Xxxxxxxxx X.005 during the average time consistent busy hour. Two-Way Interconnection Trunk groups that connect to a Frontier local Tandem shall be engineered using a design blocking objective of Xxxx-Xxxxxxxxx B.01 X.01 during the average time consistent busy hour. Frontier and Onvoy TCG shall engineer Two-Way Interconnection Trunks using Telcordia Notes on the Networks SR 2275 (formerly known as BOC Notes on the LEC Networks SR-TSV-002275). 2.4.9 The performance standard for final Two-Way Interconnection Trunk groups shall be that no such Interconnection Trunk group will exceed its design blocking objective (B.005 or B.01, as applicable) for three (3) consecutive calendar traffic study months. 2.4.10 Onvoy shall determine and order the number of Two-Way Interconnection Trunks that are required to meet the applicable design blocking objective for all traffic carried on each Two-Way Interconnection Trunk group. Onvoy shall order Two-Way Interconnection Trunks by submitting ASRs to Frontier setting forth the number of Two-Way Interconnection Trunks to be installed and the requested installation dates within Frontier’s effective standard intervals or negotiated intervals, as appropriate. Onvoy shall complete ASRs in accordance with OBF Guidelines as in effect from time to time. 2.4.11 Frontier may (but shall not be obligated to) monitor Two-Way Interconnection Trunk groups using service results for the applicable design blocking objective. If Frontier observes blocking in excess of the applicable design objective on any Tandem Two-Way Interconnection Trunk group and Onvoy has not notified Frontier that it has corrected such blocking, Frontier may submit to Onvoy a Trunk Group Service Request directing Onvoy to remedy the blocking. Upon receipt of a Trunk Group Service Request, Onvoy will complete an ASR to establish or augment the End Office Two-Way Interconnection Trunk group(s), or, if mutually agreed, to augment the Tandem Two-Way Interconnection Trunk group with excessive blocking and submit the ASR to Frontier within five (5) Business Days. 2.4.12 The Parties will review all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of seventy percent (70%), or greater, to determine whether those groups should be augmented. Onvoy will promptly augment all Tandem Two-Way Interconnection Trunk groups that reach a utilization level of eighty percent (80%) by submitting ASRs for additional trunks sufficient to attain a utilization level of approximately seventy percent (70%), unless the Parties agree that additional trunking is not required. For each Tandem Two- Way Interconnection Trunk group with a utilization level of less than sixty percent (60%), unless the Parties agree otherwise, Onvoy will promptly submit ASRs to disconnect a sufficient number of Interconnection Trunks to attain a utilization level of approximately sixty percent (60%) for each respective group, unless the Parties agree that the Two-Way Interconnection Trunks should not be disconnected. In the event Onvoy fails to submit an ASR for Two-Way Interconnection Trunks in conformance with this Section, Frontier may disconnect the excess Interconnection Trunks or bill (and Onvoy shall pay) for the excess Interconnection Trunks at the applicable Frontier rates. 2.4.13 Because Frontier will not be in control of when and how many Two-Way Interconnection Trunks are established between its network and Onvoy’s network, Frontier’s performance in connection with these Two-Way Interconnection Trunk groups shall not be subject to any performance measurements and remedies under this Agreement, and, except as otherwise required by Applicable Law, under any FCC or Commission approved carrier- to-carrier performance assurance guidelines or plan. 2.4.14 Onvoy will route its traffic, or traffic belonging to its Interconnected VoIP Provider Customers, to Frontier over the End Office and Tandem Two-Way Interconnection Trunks in accordance with SR-TAP-000191, including but not limited to those standards requiring that a call from Onvoy to a Frontier End Office will first be routed to the End Office Interconnection Trunk group between Onvoy and the Frontier End Office.three