Line Sharing

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Product Manager - Ed Glorius


In accordance with the FCC's Line Sharing Order in Docket CC No. 98-147, and the limited circumstances described in Rule 51.319, Verizon offers an Unbundled Network Element known as Line Sharing. Line Sharing will provide the means for a Local Service Provider (LSP) to order service configuration that will allow them to place a digital data service on a subscriber loop currently providing Verizon analog voice services to an end user. This arrangement will enable Verizon to provide the voice (POTS) portion and LSPs to provide the data portion of the end users telecommunications service. Line sharing consists of a digital data based service provisioned by a LSP and the voice band service provisioned by Verizon.

In order for a loop to be eligible for a Line Share Arrangement:

  • The analog voice-grade POTS service must be provided to the end user by Verizon and the dial tone must originate from a Verizon End Office Switch in the wire center where the Line Share Arrangement is being requested
  • The existing loop must be ADSL capable
  • The xDSL technology deployed by the Local Service Provider (LSP) must not interfere with the analog voice band transmission

In a Line Share Arrangement, Verizon will be providing the voice service and the LSP will be providing the data service. As a result, LSP is responsible for providing the splitter. The LSP is also responsible for providing its own Digital Subscriber Line Access Multiplexer (DSLAM) in a collocation arrangement and for providing or arranging for any CPE that may be required at the end user premises for the data service.

Per previous industry notifications (i.e., October 2, 2003 - 'FCC Triennial Review Order,' June 21, 2004 - 'Notice of Line Sharing Rate Increases,' and July 13, 2004 - 'Reminder About Commercially Negotiated Replacements for Discontinued UNEs'), October 1, 2004 was the last date on which Verizon would accept orders from CLECs for new line sharing arrangements without a new, commercially negotiated agreement (known as VISTA) between CLECs and Verizon. If a CLEC is interested in pursuing an agreement with Verizon, they should first sign a non-disclosure agreement to cover the negotiations by contacting their their Account Manager and requesting that an NDA be prepared for them. The Account Manager will obtain necessary information and provide it to the Contract Management organization to prepare the NDA.

If you do not have an Account Manager, please contact us.

Verizon East:

Number Portability When Line Sharing (DSL) is Present:

If a LSP wishes to port a number, and if Line Sharing (DSL) is present on the account, the Line Sharing Arrangement (DSL) needs to be disconnected prior to the porting activity. In order to accomplish this, the following must occur:

  • Prior to porting a number, a Local Service Provider (LSP) should check for the presence of a Line Sharing Arrangement (DSL) on the Customer Service Record (CSR). This will be identified in the Service and Equipment section of the CSR by the use of a 'ME' FID. When 'ME' is present, a Line Sharing Arrangement (DSL) is in place and data is being provided to the end user by a Data LSP. The LSP should notify the end user to call their data provider to have the Line Sharing Arrangement (DSL) disconnected immediately. Once the disconnect has occurred, the porting order can be placed with Verizon.
  • If a number portability request is received from a LSP, and in the provisioning process it is discovered that a Line Share Arrangement (DSL) is in place, the LSP's number portability order will be queried back to the LSP. The LSP must go back to the end user and have the data disconnected before the number portability order can be handled. Again, the end user should call their data provider to render the disconnect.

Line and Station Transfers:

Verizon will perform Line and Station Transfers on Line Sharing Arrangements as a facility modification in order to free up qualified copper facilities which are to be used in Line Sharing Arrangements. An additional non-recurring charge will be associated with this work; the rate will be a state specific rate. Terms, conditions and rates will be identified in appropriate Unbundled Network Element Tariffs and/or in Interconnection Agreements or contract amendments. Line and Station Transfers will be performed in the provisioning process after a loop has been qualified; requests for Line and Station Transfers will not be accepted directly from LSPs.

Line Sharing and Centrex:

Verizon will allow orders for Line Sharing over analog Centrex only. Certain forms of Centrex are considered to be digital in nature, or have electronics attached to the system such as P-phone sets or electronic key phones; Line Sharing will not be allowed in these situations since these loops would not be DSL compatible. Verizon is generally able to identify these forms of digital Centrex by existing classes of service on the Retail account or by USOC codes on the account. If an LSR is received for Line Sharing over Centrex in one of these situations, the LSR would be queried back to the LSP and should be cancelled.

Verizon will allow orders for Line Sharing over analog Centrex only. Certain forms of Centrex are considered to be digital in nature, or have electronics attached to the system such as P-phone sets or electronic key phones; Line Sharing will not be allowed in these situations since these loops would not be DSL compatible. Verizon is generally able to identify these forms of digital Centrex by existing classes of service on the Retail account or by USOC codes on the account. If an LSR is received for Line Sharing over Centrex in one of these situations, the LSR would be queried back to the LSP and should be cancelled.
Line Sharing over analog Centrex should be ordered using existing Line Sharing pre-ordering and ordering processes, procedures and ordering codes.

Verizon West

For a LSP to order line sharing, the following circumstances must exist:

  • LSP must have collocation in the offices where Line Sharing is desired.
  • Verizon West is providing retail residence or business analog voice service to the end user.
  • Verizon West is providing residence or business or business analog voice service for resale to an end user by another carrier.
  • Line Sharing can not be provisioned on primary hunt group numbers or roll over numbers

If Verizon disconnects the end user customer's voice service in compliance with applicable federal, state and local law, then there is no longer an incumbent voice band service with which the LSP can share the loop.

The same holds true if the customer voluntarily cancels the Verizon provided voice band service on the shared loop. In those situations, for the LSP to continue to provide data services to that customer, the LSP must purchase the entire unbundled loop. The LSP will receive a courtesy notification from the NMC via fax that the voice band service has been disconnected. If the LSP wants the UNE Loop to continue serving the customer, they must send a NEW LSR containing the retail/resale telephone number, FIC Line Sharing number and related service order numbers, back to the NMC within 5 business days of the Retail/Resale voice service being disconnected.

What is provided with Line Sharing?

  • LSP Provided Splitter – Virtual - Verizon West will provide the distribution frame, jumpers and installation of all jumpers.
  • LSP Provided Splitter - Physical – Verizon West will provide the distribution frame, jumpers and installation of all jumpers.
  • Verizon West Provided Splitter – Verizon West will provide the splitters, splitter bay and the cables from the splitter bay to the main distribution frame. All jumpers will be provided by Verizon West. The splitters will be installed in a limited number of Verizon West Central Offices. These splitters will continue to be augmented until December 15, 2000. After these splitters are exhausted, it will be the LSPs responsibility to provide either physical or virtual located splitters.

Orders for CLEC owned splitter configurations require a PORT designation for line sharing cross connects. Each port will consist of two pair terminations, one for the line side of the splitter that will be jumpered to the subscribers serving pair, the other termination for the POTS return side of the splitter that is to be jumpered to the Central Office switch line circuit.

Miscellaneous Information

End User Premise – LSP will provide any micro filters or similar equipment needed at the end user premise to maintain the end user's analog equipment functionality.

End-Users with Burglar Alarms

xDSL technologies that share the POTS line, such as ADSL, may cause interference with some monitored alarm systems, resulting in false alarms, or in some instances, impair the alarm system to the point that it becomes inoperative.

When the LSP provides line sharing services to an end-user, the LSP is responsible for determining if the end user has a burglar alarm system and for ensuring that the burglar alarm system remains operative and is not interfered with by the high frequencies associated with line sharing services. Verizon West is not liable for any damages, which may result if a LSP's line sharing service interferes with the end-user's burglar alarm monitoring systems.

Possible corrective measures include:

1. If the burglar alarm system interfaces the inside wiring of the customer premise via an RJ11 jack, place a micro-filter between the burglar alarm dial-up unit and the inside wiring.
2. If the burglar alarm system is 'hard-wired' to the inside wiring at the customer premise, install a splitter to isolate the high frequency data signals from the burglar alarm dial-up unit.

For further information, please review the Unbundled Digital Loop Technical Specifications document.

DSL Premise Service

It is a Wholesale Markets product offer that allows a DLEC to contract with Verizon Network Services for an additional level of support for DSL service delivery at the end user customer premise. DSL Premise Service allows a DLEC to order the dispatch of Verizon technicians to install CPE at the end user customer premise. Work preformed may include some or all of the following: Installation of microfilters, splitter, inside wire and jack, and external modems.

Beginning February 20, 2002, the IOSCs submitted in the SAN field of Line Share LSRs for the DSL Premise Service will change. For LSRs submitted prior to February 20, 2002, DLECs should have used the IOSCs 80600 and 87053. After February 20, 2002, DLECs should substitute IOSC 67585 for IOSC 80600 and IOSC 67586 for IOSC 87053. All other rules will apply as prior to the February 20 date.

Pricing

Non-recurring Costs (NRC)

Initial Service Order – is applied on a per LSR basis.

  • Local Service Provider (LSP) Owned Splitter Installation – is applied on a per occurrence basis for Verizon Communication's central office work activities associated with the installation of Line Sharing in a LSP owned splitter scenario.
  • Collocation Cross Connect Installation - for installation of voice path cross connects from the main distribution frame to the collocation area, in a LSP owned splitter arrangement.
  • Line Conditioning – is applied on a per occurrence basis, when requested by the LSP, and is for the removal of load coils, filters and/or bridge tap. It is the LSP's responsibility to request the type of Line Conditioning that is needed on the LSR.

Monthly Recurring Costs (MRC)

  • Line Sharing Charge – is applied on a per line basis in a Verizon provided Splitter arrangement.
  • Collocation Cross Connect – applied per cross connect for connecting the voice path from the main distribution frame to the collocation area in a LSP owned splitter arrangement. This charge already exists in the collocation product offering.

See your federal and state tariffs for detailed information.

To learn more about this service, please contact us or call your account manager today.



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