Common use of Trunk Design Blocking Criteria Clause in Contracts

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table belowTable 1. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Trunk Group Type Design Blocking Objective Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table belowTable 1. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table theTable below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Trunk Group Type Design Blocking Objective Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table theTable below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Trunk Group Type Design Blocking Objective Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%% 1 During implementation the Parties will mutually agree on an Economic Centum Call Seconds (ECCS) or some other means for the sizing of this trunk group.

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard XxxxNeal-Xxxxxxxxx Wilkinson Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 4.5.1.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below1. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%% 1 During implementation the Parties will mutually agree on an Economic Centum Call Seconds (ECCS) or some other means for the sizing of this trunk group.

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table belowTable 1. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard XxxxNeal-Xxxxxxxxx Wilkinson Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Trunk Group Type Design Blocking Objective Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table belowTable 1. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Trunk Group Type Design Blocking Objective Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% 1 During implementation the Parties will mutually agree on an Economic Centum Call Seconds (ECCS) or some other means for the sizing of this trunk group. Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 ECCS* Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T OKLAHOMA only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party * During implementation the Parties will mutually agree on an Economic Centum Call Seconds (AT&T SOUTHEAST REGION 9-STATE onlyECCS) 1%or some other means for the sizing of this trunk group.

Trunk Design Blocking Criteria. 4.5.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Page 75 of 276 Contract Id: 4800340 Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%

Trunk Design Blocking Criteria. 4.5.1 4.5.1.1 Trunk requirements for forecasting and servicing shall be based on the blocking objectives shown in the Table below1. Trunk requirements shall be based upon time consistent average busy season busy hour twenty (20) day averaged loads applied to industry standard Xxxx-Xxxxxxxxx Trunk Group Capacity algorithms (using Medium day-to-day Variation and 1.0 Peakedness factor until actual traffic data is available). Trunk Group Type Design Blocking Objective Local Interconnection Trunk Group – Direct End Office (Primary High) ECCS1 Local Interconnection Trunk Group – Direct End Office (Final) 2% IntraLATA Toll Trunk Group (Local/Access or Access Tandem Switch) 1% Local Interconnection Trunk Group (Local Tandem) 1% Meet Point (Local/Access or Access Tandem Switch) (AT&T-12STATE AT&T-13STATE only) 0.5% E911 1% Operator Services (DA/DACC) 1% Operator Services (0+, 0-) 1% Busy Line Verification/Emergency Interrupt 1% Third Party (AT&T SOUTHEAST REGION 9-STATE only) 1%