Expanded Extended Loop

Overview

Expanded Extended Loop (EEL) is a combination of dedicated unbundled loops and unbundled interoffice transport, and includes multiplexing (where required).

Description

Expanded Extended Loop (EEL) is a combination of dedicated unbundled loops and unbundled interoffice transport, and includes multiplexing (where required), and loops which are installed by Verizon at the Local Service Provider's (LSP) request.

The unbundled dedicated interoffice transport and multiplexer, either DS3 or DS1, may be combined with unbundled loops, either DS3, DS1, 2-Wire Analog, 2-Wire Digital ISDN, 4-Wire Analog, 4-wire 56 kbps digital, or 64kpbs digital. EEL arrangements may also be comprised of DS3 dedicated transport with DS3 loop, DS1 dedicated transport with DS1 loop, Voice Grade dedicated transport with Voice Grade loop or DS0 dedicated transport with DDS (56KD or 64KD) loop. With EEL, LSPs may aggregate Verizon UNE loops and transport them back to the LSP switch or distant node without having to collocate in the Verizon central office where the loop originates.

With EEL, as with any UNE, the LSP is responsible for testing, trouble isolation, and trouble reporting. Until procedures and technical arrangements are available that will permit testing and sectionalizing of reporting troubles, however, Verizon is responsible for the testing, sectionalizing, and repair of all LSP reported EEL troubles. The trouble reporting procedure must conform to the established mechanized process and will have service maintenance standards that are comparable with those of their counterpart service in the retail world (e.g., POTS service, 24 Hours for voice grade loops). The EEL arrangements must be used to provide a significant amount of Switched Local Exchange Service and associated Switched Access Service. EEL arrangements may not cross LATA boundaries. EEL arrangements may not touch a Verizon switch. EEL arrangements may not be used as a substitute for Special Access.

There are four different types of EEL backbone building blocks that can be combined or utilized individually as follows:

Backbone A: DS3 transport with 3/1 multiplexing
Backbone B: DS3 transport with no multiplexing
Backbone C: DS1 transport with 1/0 multiplexing
Backbone D: DS1 transport with no multiplexing

EEL voice grade loops with dedicated transport, and EEL 4 wire DS0 (DDS) 56 KD or 64KD loops with dedicated transport are also available. These arrangements combine unbundled voice grade loops with EEL voice grade dedicated transport, or unbundled 4 wire DS0 loops with EEL DS0 dedicated transport.

DS3/DS1 Transport with and without Multiplexing - Transport (Backbone A, B, C and D)
EEL Dedicated DS3/DS1 transport with or without multiplexing is a high-capacity, digital transmission path that is dedicated to the use of the ordering LSP in it's provisioning of EEL service. Additional information regarding interoffice transport and multiplexing is available under Unbundled IOF transport and Standalone Multiplexer product pages.

DS3/DS1 Loops - Loops combined with Backbone B & D
Where available, EEL DS3/DS1 loops can be ordered in conjunction with DS3/DS1 transport when no multiplexing is desired. For EEL arrangements, DS3 loops may only be combined with DS3 transport and DS1 loops may only be combined with DS1 transport.

A Monthly Loop Connection Charge will be applied in conjunction with all DS3/DS1 loops combined with an EEL arrangement.

M-Loops - DS1 and DS0 Loops combined with Backbones A and C.
The M-Loop is a designed circuit that is connected off the low speed side of the DS3/DS1 or DS1/DS0 multiplexer. These loops are used in conjunction with EEL service. The M-Loops are part of the building block arrangement and will terminate at a Network Interface Device (NID) in an end user's premises.

Listed below are the types of M Loops available:

2-Wire Analog Provides a channel for the transmission of analog signals with an approximate bandwidth of 300-3000 Hz.

4-Wire Analog -Provides for the more complex services to end users, such as data services, private line services to a PBX, etc.

2-Wire Digital ISDN Qualified-Provides for the transmission of Basic Rate ISDN, which consists of two B channels, and one D channel, from the LSP end user's premises to the same termination point. The D channel and each of the B channels must support the transport of 64 Kbps.

4-Wire Digital Loop DS0 (56 KD or 64 KD) – Provides for the transmission of digital data at a synchronous rate of 56 or 64 kbps simultaneously in both directions. An optional secondary channel operating at 8 kbps is available with the 56 kbps service. 4-Wire DS0 UNE loop may be used to transport Switched 56 kbps service (ie, Type I Public Switched Digital Service (PSDS)).

4-Wire Digital Loop DS1 - provides a two-point digital channel which provides for simultaneous two-way transmission at a transmission speed of 1.544 megabits per second (Mbps).

Voice Grade /DS0 Dedicated Transport with Voice Grade/DS0 Loops Product

Voice Grade Transport with Voice Grade UNE M-Loop, or Voice Grade Transport with Extended Voice Grade UNE loop?
DS0 Transport with 56KD/64KD UNE M-Loop, or DS0 transport with Extended 56KD/64KD UNE loop?
Voice Grade Transport combined with Voice Grade UNE loops?
DS0 Transport combined with 56 KD or 64 KD 4 wire DS0 UNE loops?

A voice grade/DS0 loop from an end user location can be combined with voice grade dedicated transport to extend to a LSP collocation arrangement in a central office other than that which serves the end user location.

Types of Extended Unbundled Voice Grade or DS0 Loops

Listed below are the types of voice grade Loops that can be combined with voice grade transport:

2-Wire Analog - Provides a channel for the transmission of analog signals with an approximate bandwidth of 300-3000 Hz.

4-Wire Analog - Provides for the more complex services to end users, such as data services, private line services to a PBX, etc.

2-Wire Digital ISDN Qualified - Provides for the transmission of Basic Rate ISDN, which consists of two B channels, and one D channel, from theLSP end user's premises to the same termination point. The D channel and each of the B channels must support the transport of 64 kbps.

4-Wire Digital Loop DS0 (56 KD or 64 KD) - Provides for the transmission of digital data at a synchronous rate of 56 or 64 kbps simultaneously in both directions. An optional secondary channel operating at 8 kbps is available with the 56 kbps service. 4-Wire DS0 UNE loop may be used to transport Switched 56 kbps service (i.e., Type I Public Switched Digital Service (PSDS)).

Availability

EEL is a combination of an unbundled loop and unbundled dedicated transport, including multiplexing where required. New orders for this combination, subject to the availability of facilities, and conversions from existing special access service arrangements are available in all Verizon states to the extent required by applicable law. The EEL product is offered under interconnection agreements, state tariffs, SGATs or commission regulations.

Pricing

EEL arrangements combine unbundled loops, unbundled dedicated transport, and when necessary, multiplexing. Rates and charges associated with specific EEL arrangements will be the sum of those charges applicable to the individual UNEs and if applicable, the multiplexer comprising the EEL. In the Verizon East states, a monthly EEL Loop test charge will be billed for each EEL loop. In Massachusetts, a one-time non-recurring EEL Loop test charge will apply per trouble reported on an EEL arrangement. This charge is intended to recover the costs associated with built in test points which allow Verizon to perform maintenance and testing on EEL arrangements. The EEL Loop Test charge is not applicable in the West states.

Termination liability and minimum service period charges may be applicable to early termination of special access services purchased pursuant to Verizon’s Tariffs FCC No. 1 and No. 11. All applicable termination liabilities and minimum-period penalties will apply pursuant to the tariff terms and conditions for early termination of services.

For pricing information, please review your interconnection agreement and/or state tariff or SGAT.

Features

The unbundled dedicated interoffice transport and multiplexer, either DS3 or DS1, may be combined with unbundled loops, either DS3, DS1, 2-Wire Analog, 2-Wire Digital ISDN, 4-Wire Analog, 4-wire 56 kbps digital, or 64kpbs digital. EEL arrangements may also be comprised of DS3 dedicated transport with DS3 loop, DS1 dedicated transport with DS1 loop, Voice Grade dedicated transport with Voice Grade loop or DS0 dedicated transport with DDS (56KD or 64KD) loop. With EEL, Local Service Providers (LSPs)may aggregate Verizon UNE loops and transport them back to the LSP switch or distant node without having to collocate in the Verizon central office where the loop originates.

C-Bit Parity is an ordering option for DS3 EEL loops. There are two standard framing formats for the DS3 frame overhead bits. These framing formats are called M23 and C-Bit Parity. The DS3 framing format and the DS3 payload format are determined by the DS3 terminal equipment that originates and terminates the DS3 signal. When the DS3 payload signal is framed, the equipment at each end of the DS3 channel takes the payload data and formats it into DS3 frames that consist of 4,760 bits each. Fifty-six of the bits in each frame are used for overhead.

Carriers may use either framing format, but for compatibility purposes, the specific framing format needs to be identified when the DS3 Unbundled Loop is ordered. Further, when C-Bit Parity is specified, carriers must also identify whether the DS3 payload is channelized (i.e., payload consists of 28 DS1 channels) or unchannelized (i.e., payload consists of a single 44.21 Mbps channel). C-Bit Parity is not available for a DS3 EEL backbone facility that terminates in a Verizon-provided DS3 to DS1 multiplexer.

NC/NCI code combinations for C-Bit Parity can be found by clicking here.

Verizon West:

Unbundled dedicated transport and multiplexer, either DS3 or DS1, may be combined with unbundled loops, either 2-Wire or 4-Wire Analog. EEL arrangements may also be comprised of DS3 dedicated transport with DS3 loop, DS1 dedicated transport with DS1 loop, Voice Grade dedicated transport with 2-Wire or 4-Wire Analog loops. With EEL, LSPs may aggregate Verizon UNE loops and transport them back to the LSP switch or collocation arrangement without having to collocate in the Verizon central office where the loop originates.