Unbundled Local Loop ( is the transmission path from Frontier MDF, or its equivalent, up to and including the Frontier Network Interface Device (NID) at End User premises.
Unbundled Local Loop (. “ULL”) Transmission Types
Unbundled Local Loop (. Installation1 PERFORMANCE INTERVAL DATE2
Unbundled Local Loop (. “ULL”) Types.
Unbundled Local Loop (. “ULL”) Types
11.2.1 2-Wire Analog Voice Grade ULL" or "Analog 2W" which support analog transmission of 300-3000 Hz, repeat link start, link reverse battery, or ground start seizure and disconnect in one direction (toward the End Office Switch), and repeat ringing in the other direction (toward the Customer). Analog 2W include Loops sufficient for the provision of PBX trunks, pay telephone lines and electronic key system lines.
11.2.2 4-Wire Analog Voice Grade ULL" or "Analog 4W" which support transmission of voice grade signals using separate transmit and receive paths and terminate in a 4-wire electrical interface.
11.2.3 2-Wire ISDN Digital Grade ULL" or "BRI ISDN" (Premium Link) which support digital transmission of two 64 Kbps bearer channels and one 16 Kbps data channel. BRI ISDN is a 2B+D Basic Rate Interface-Integrated Services Digital Network (BRI-ISDN) Loop which will meet national ISDN standards and conform to ANSI T1.601-1992 & T1E1.4 90-004R3.
Unbundled Local Loop (. “ULL”) Types
11.2.1 2-Wire Analog Voice Grade ULL" or "Analog 2W" which supports analog transmission of 300-3000 Hz, repeat link start, link reverse battery, or ground start seizure and disconnect in one direction (toward the End Office Switch), and repeat ringing in the other direction (toward the Customer) and terminates at both the central office MDF (or equivalent) and the Customer premises, in accordance with BA TR72565 and TR72570.
11.2.2 4-Wire Analog Voice Grade ULL" or "Analog 4W" which supports transmission of voice grade signals using separate transmit and receive paths and terminate in a 4-wire electrical interface at both ends, in accordance with BA TR72570..
11.2.3 2-Wire ISDN Digital Grade ULL" or "BRI ISDN" (Premium Link) which supports digital transmission of two 64 Kbps bearer channels and one 16 Kbps data channel (“2B+D”) in accordance with BA TR72575. BRI ISDN is a 2B+D Basic Rate Interface-Integrated Services Digital Network (BRI-ISDN) Loop which will support equipment that meets national ISDN standards and conforms to ANSI T1.601-1992 & T1E1.4 90-004R3.
Unbundled Local Loop (. “ULL”) Transmission Types
11.2.1 “2-Wire Analog Voice Grade ULL” or “Analog 2W” which supports analog transmission of 300-3000 Hz, loop start, loop reverse battery, ground start, and no signaling and terminates at both the Central Office MDF (or equivalent) and the Customer premises, in accordance with BA TR72565 and TR72570.
11.2.2 “4-Wire Analog Voice Grade ULL” or “Analog 4W” provides an effective 4-wire channel with 4-wire interfaces at each end that is suitable for the transport of analog voice grade (nominal 300 to 3000 Hz) signals. The service will operate with one of the following signaling types that may be specified when the service is ordered: loop-start, ground-start, loop- reverse-battery, duplex, and no signaling. The service is more fully described in Bell Atlantic TR-72570.
11.2.3 “2-Wire ISDN Digital Grade ULL” or “BRI ISDN” (Premium Link) which supports digital transmission of two 64 kbps bearer channels and one 16 kbps data channel (“2B+D”) in accordance with BA TR72575. BRI ISDN is a 2B+D Basic Rate Interface-Integrated Services Digital Network (BRI-ISDN) Loop which will support equipment that meets national ISDN standards and conforms to ANSI T1.601-1992 & T1E1.4 90-004R3.
11.2.4 “2-Wire ADSL-Compatible ULL” or “ADSL 2W” is a 2-wire, non- loaded, twisted copper pair that meets revised resistance design or carrier serving area design guidelines. An ADSL-2W is a transmission path that is suitable for the transmission of up to a 6 mpbs digital signal downstream (toward the Customer) and up to a 640 kbps digital signal upstream (away from the Customer) while simultaneously carrying an analog voice signal, although Covad is not restricted to those bandwidth specificaitons in providing its services, provided that Covad complies with appropriate industry ADSL standards and BA technical reference TR72575. An ADSL 2W terminates in a 2-wire electrical interface at the Customer premises and at the Bell Atlantic Central Office frame. 2-wire ADSL-compatible local loops are only available where existing facilities can meet the non-loaded revised resistance design or carrier serving area design guidelines. The upstream and downstream ADSL power spectral density masks and dc line power limits referenced in BA TR 72575 must be met. 2-Wire ADSL- compatible Local Loops are subject to availability.
11.2.5 “2-Wire HDSL-Compatible ULL” or “HDSL 2W” consisits of a single 2- wire, non-loaded, twisted copper pair that meets the carrier serving area design crit...
Unbundled Local Loop (. “ULL”) Transmission Types
11.2.1 “2‑Wire Analog Voice Grade ULL” or “Analog 2W” which supports analog transmission of 300-3000 Hz, repeat link start, link reverse battery, or ground start seizure and disconnect in one direction (toward the End Office Switch), and repeat ringing in the other direction (toward the Customer) and terminates at both the central office MDF (or equivalent) and the Customer premises, in accordance with BA TR72565 and TR 72570. At the request of ACI, BA agrees to make every commercially reasonable effort to provide such ULLs over copper facilities.
11.2.2 “4‑Wire Analog Voice Grade ULL” or “Analog 4W” which supports transmission of voice grade signals using separate transmit and receive paths and terminate in a 4-wire electrical interface at both ends, in accordance with BA TR72570.
11.2.3 “2‑Wire ISDN Digital Grade ULL” or “BRI ISDN” provides a channel with 2-wire interfaces at each end that is suitable for the transport of 160 kbps digital services using the ISDN 2B1Q line code.
Unbundled Local Loop (. Note: For an individual loop, the appropriate density zone is determined by the number of lines per square mile of the PRTC exchange area. A list of municipalities by Density Zone is included as Appendix A to this attachment. Price per Local Loop
Unbundled Local Loop (. “ULL”) Types
11.2.1 2-Wire Analog Voice Grade ULL" or "Analog 2W" which support analog transmission of 300-3000 Hz, repeat link start, link reverse battery, or ground start seizure and disconnect in one direction (toward the End Office Switch), and repeat ringing in the other direction (toward the Customer). Analog 2W include Loops sufficient for the provision of PBX trunks, pay telephone lines and electronic key system lines.
11.2.2 4-Wire Analog Voice Grade ULL" or "Analog 4W" which support transmission of voice grade signals using separate transmit and receive paths and terminate in a 4-wire electrical interface.
11.2.3 2-Wire ISDN Digital Grade ULL" or "BRI ISDN" (Premium Link) which support digital transmission of two 64 Kbps bearer channels and one 16 Kbps data channel. BRI ISDN is a 2B+D Basic Rate Interface-Integrated Services Digital Network (BRI-ISDN) Loop which will meet national ISDN standards and conform to ANSI T1.601-1992 & T1E1.4 90- 004R3.
11.2.4 “2-Wire ADSL-Compatible ULL” or ADSL 2W is a 2-wire, non-loaded, twisted copper pair that meets revised resistance design or carrier serving area design guidelines. The upstream and downstream ADSL power spectral density masks and dc line power limits in BA TR 72575, Issue 2 must be met. ADSL-compatible local loops are subject to availability.
11.2.5 “2-Wire HDSL-Compatible ULL” or HDSL 2W consists of a single 2- wire, non-loaded, twisted copper pair that meets the carrier serving area design criteria. The HDSL power spectral density mask and dc line power limits referenced in BA TR 72575, Issue 2 must be met. 2-Wire HDSL-compatible local loops are subject to availability.
11.2.6 “4-Wire HDSL-Compatible ULL” or HDSL 4W consists of two 2-wire, non-loaded, twisted copper pairs that meet the carrier serving area design criteria. The HDSL power spectral density mask and dc line power limits referenced in BA TR 72575, Issue 2 must be met. 4-Wire HDSL-compatible local loops are subject to availability.
11.2.7 “4-Wire DS-1-compatible ULL” (Digital Grade Loop) provides a channel which provides 1.544 Mbps digital transmission path between a Customer premises and a DSL Collocation node at a BA central office, and is capable of operating in a full duplex, time division (digital) multiplexing mode. A DS-1 Digital Grade Loop provides transmission capacity equivalent to 24 voice grade channels with associated signaling, twenty-four 56 Kbps digital channels when in band signaling is provided or twenty-four 64 Kb...
