Product Catalog (PCAT)
Unbundled Dedicated Interoffice Transport (UDIT) - V36.0
Product Description
Unbundled Dedicated Interoffice Transport (UDIT) is a single transmission path for Digital Signal Level 0 (DS0), Digital Signal Level 1 (DS1), Digital Signal Level 3 (DS3), Optical Carrier Level 3 (OC3), Optical Carrier Level 12 (OC12), Optical Carrier Level 48 (OC48) Optical Carrier Level 192 (OC192), and such higher capacities as evolve over time and where facilities are available. Individual products include Unbundled Dedicated Interoffice Transport (UDIT), Extended UDIT (E-UDIT), Dangling UDIT (D-UDIT), Split UDIT (S-UDIT), and Meet-Point UDIT (M-UDIT).
Other options available with UDIT are:
- Unbundled Multiplexing
- Rearrangements
- Remote Node/Remote Port
Unbundled Multiplexing is a stand-alone function associated with UDIT and is offered in the following configurations:
DS3 to DS1
DS1 to DS0
Rearrangement allows you to move or rearrange your UDIT or E-UDIT terminations on your demarcation point or change your UDIT or E-UDIT options. These Rearrangements are available through a single office or dual office request. Single office Rearrangements are limited to the movement of terminations within a single wire center. Dual office Rearrangements are used to change options or movement of terminations in two wire centers. Rearrangement is only available for existing and working UDITs or E-UDITs.
Remote Node, on an E-UDIT termination at a CLEC Wire Center or Interexchange Carrier (IXC) Point-of-Presence (POP) provides the equipment necessary to deliver bandwidth capacities of OC3, OC12, OC48 and OC192. At least one Remote Port must be ordered with Remote Node. Refer to your Interconnection Agreement for availability. In states where the distinction between UDIT and E-UDIT has been removed, Remote Node/Remote Port will be available with UDIT terminations in the CLEC Wire Center or IXC POP.
Unbundled Dedicated Interoffice Transport (UDIT), E-UDIT, M-UDIT, and Unbundled Multiplexing product definitions and diagrams are located in the Product Diagrams section of this web page. Product descriptions for UDIT and E-UDIT may vary by state.
Dangling UDIT (D-UDIT) allows for an interim reservation of a UDIT prior to the completion of your associated collocation build.
The D-UDIT offers you three distinct advantages:
- You receive facility availability information early in the collocation build process. In the event facilities are not available, you can re-evaluate your transport strategy.
- When facilities are available, you are assured reservation of the facilities prior to waiting for the collocation to be built. CenturyLink™ will begin to assess recurring charges along with the standard nonrecurring charges for the facilities once the D-UDIT is completed.
- The UDIT becomes available once collocation has been completed.
Split UDIT (S-UDIT) enables you to order a UDIT from an existing CLEC collocation space in one CenturyLink Wire Center to another collocation space of a different CLEC in a different CenturyLink Wire Center in the same Local Access and Transport Area (LATA) and state. S-UDIT is identical to UDIT in specifications, availability, pricing, and maintenance.
Product Diagram
Unbundled Dedicated Interoffice Transport (UDIT) provides a transmission path between CenturyLink Wire Centers in the same LATA and state. UDIT is a dedicated interoffice transmission path designed to a DSX panel (or equivalent). You must have collocation in each CenturyLink Wire Center and have requested termination capacity through the collocation process. UDIT is distance sensitive and is for your use only. You can assign channels and transport voice or data. It is your responsibility to design from the DSX panel to the demarcation point and on to a connection in the wire center. UDIT is a point-to-point transmission path and not a self-healing product. Synchronous Optical Network (SONET) add/drop multiplexing will be offered on an Individual Case Basis where facilities and capacity exist.
Extended UDIT (E-UDIT) provides you a bandwidth specific transmission path between a CenturyLink Serving Wire Center and your wire center or an IXC POP within the same CenturyLink Serving Wire Center area. E-UDIT must be jointly engineered with CenturyLink. CenturyLink will provide terminating equipment at the Serving Wire Center and the transmission media to the interface at your wire center or IXC POP. You, or the IXC, need to provide CenturyLink with the space necessary for the termination equipment. E-UDIT is a dedicated facility for your use. The E-UDIT may be used for voice or data traffic but not to bypass long distance or access charges. One end of the E-UDIT must terminate in the local CenturyLink Serving Wire Center. This termination will be at the appropriate cross-connect frame. You must have a collocation in the CenturyLink Serving Wire Center and have requested termination capacity through the collocation process. E-UDIT is a point-to-point service and not a self-healing product.
In states where the distinction between UDIT and E-UDIT has been removed, the E-UDIT portion of the circuit will have the same rate structure as UDIT. In this case, a CLEC Wire Center and IXC POP will be included as potential termination points. This provides you with a bandwidth specific transmission path between a CenturyLink Wire Center and your wire center or an IXC POP within the same CenturyLink Serving Wire Center area. Refer to your Interconnection Agreement for availability.
Unbundled Dedicated Interoffice Transport and E-UDIT Combination provides you with bandwidth specific transmission paths between a CenturyLink Wire Center, a CenturyLink Serving Wire Center and your wire center. Collocation is required at the CenturyLink Wire Center. The UDIT and E-UDIT Combination is provided at the same bandwidth to form a single transmission path.
Meet-Point UDIT (M-UDIT) provides you with a network element of a single transmission path between a CenturyLink Wire Center and a mutually agreed upon meet point with an Independent Telco located outside of CenturyLink territory. You must be collocated in the CenturyLink office and have requested termination capacity through the collocation process. CenturyLink provides the interoffice facility up to the meet point. It is your responsibility to design from the DSX to the demarcation point and on to a connection in the wire center. You can assign channels and transport either voice or data.
Unbundled Multiplexer is offered as a stand-alone element associated with UDIT and is offered in the following configurations:
A 3/1 Unbundled Multiplexer provides the ability to de-multiplex the DS3 44.736 Mbps signal to 28 DS1 1.544 Mbps channels. The 3/1 Unbundled Multiplexer includes a DS3 high side channel terminated to a DS3 demarcation point at your collocation; and 28 DS1 low side channels terminated to DS1 demarcation points at your collocation.
A 1/0 Unbundled Multiplexer provides the ability to de-multiplex the DS1 1.544 Mbps signal to 24 DS0 channels. The 1/0 Unbundled Multiplexer includes a DS1 high side channel terminated to a DS1 demarcation point at your collocation; and 24 DS0s low side channels terminated to DS0 demarcation points at your collocation.
Availability
Unbundled Dedicated Interoffice Transport (UDIT) is available where facilities exist throughout Legacy Qwest's 14-state local service territory.
Terms and Conditions
You are responsible for performing cross-connections within your collocation between a UDIT, E-UDIT and other services and the transmission design work for such connections. CenturyLink will provide regeneration as required to deliver the UDIT that meets American National Standards Institute, Inc. (ANSI) Standard T1.102-1993 "Digital Hierarchy - Electrical Interface; Annex B."
When you request UDIT, CenturyLink will check the availability of facilities during the provisioning process. UDIT is provided where facilities exist and/or where you have CLEC Requested UNE Construction per the terms and conditions of your Interconnection Agreement Section 9.19, which addresses options available to you when facilities do not exist. If it is determined that facilities do not exist between the two locations, CenturyLink will notify you that facilities are not available and the order will be cancelled.
Border town cities are physically located in one state with service provided from a CenturyLink Serving Wire Center located in an adjacent state. E-UDIT requests that involve a border town will be provisioned if facilities are available and your collocation and CLEC wire center are located within the same CenturyLink Serving Wire Center area.
If facilities are available, CenturyLink will deliver the UDIT according to the intervals stated in the Service Interval Guide (SIG).
Additional terms and conditions for UDIT are included in your Interconnection Agreement.
For DS1 and DS3 E-UDIT, CenturyLink will provide termination at an electrical handoff. For E-UDIT at Optical Carrier Level n (OCn) level, CenturyLink will provide an Optical Interface on a Fiber Distribution Panel (FDP) provided by CenturyLink.
Extended-UDIT is transport between your collocation in CenturyLink’s Serving Wire Center and your wire center or IXC POP, distinct from an end-user, and within CenturyLink territory. E-UDIT cannot traverse a CenturyLink Wire Center. The location of the other carrier will be considered a carrier wire center only if it meets the following criteria:
- Its location has Vertical and Horizontal (V&H) coordinates
- The wire center contains a device that switches traffic, or a node leading to such a switch
- The switch is registered with a Common Language Location Identifier (CLLI™) Code listed in the Local Exchange Routing Guide (LERG™)
You are responsible for the design between any DSX and the demarcation point (and on to whatever connection is planned) at the CenturyLink Wire Center and for design beyond the DSX or equivalent at your wire center or that of the IXC. CenturyLink will work with the other carrier to test the E-UDIT circuit, but CenturyLink is not responsible for end-to-end testing if the E-UDIT is cross-connected to another element.
At the terminating location for each E-UDIT, you will need to provide space to CenturyLink for necessary termination equipment.
CenturyLink will provision and reserve the interoffice facilities (IOF) when requesting D-UDIT. D-UDIT is not an acceptable method of requesting a UDIT if collocation has already been established. You must provide your temporary Actual Point of Termination/Connecting Facility Assignment (APOT/CFA) location CenturyLink will bill the recurring charges and nonrecurring charges for a UDIT after the reservation of IOF facilities is completed on your D-UDIT request. You will not have access to the UDIT until the final APOT has been assigned and your rearrangement order is completed. Additional information describing APOT/CFA is available in Collocation - General Information.
The M-UDIT arrangement may require new contract negotiations with the Independent Telco involved. Recurring charges will apply to the CenturyLink end of the M-UDIT and a billing percentage will be applied to the per mile charges.
CenturyLink and the Independent Telco will determine the manner in which the UDIT signal is transported between offices and the meet point methods.
When loops are ordered in combination with multiplexing, CenturyLink will provision loops directly terminated to the multiplexer before going into a collocation. Refer to Loop Mux Combination (LMC) for more information.
If a CenturyLink provided Remote Node exists at your wire center, or IXC POP, and has spare capacity, you may order Remote Node/Remote Port with E-UDIT. In states where the distinction between E-UDIT and UDIT has been removed, the Remote Node/Remote Port will be available with UDIT terminations in the CLEC Wire Center or IXC POP. Refer to your Interconnection Agreement SGAT for availability.
Technical Publications
Technical characteristics, including Network Channel /Network Channel Interface (NC/NCI™) codes, are described in Technical Publication, Unbundled Dedicated Local Interoffice Transport, 77389.Pricing
Rate Structure
Recurring charges consist of the following rate elements:
- DS0, DS1 and DS3 Transport (Fixed)
- DS0, DS1 and DS3 Transport (Per Mile)
- DS0 Low Side Channelization(Per Mile)
- OC3 Transport (Fixed)
- OC3 Transport (Per Mile)
- OC12 Transport (Fixed)
- OC12 Transport (Per Mile)
- OC48 Transport (Fixed)
- OC48 Transport (Per Mile)
- OC192 Transport (Fixed)
- OC192 Transport (Per Mile)
- ITP (Interconnection Tie Pair for connection to collocation)
Nonrecurring charges are comprised of the following bandwidths:
- DS0
- DS1
- DS3
- OC3
- OC12
- OC48
- OC192
Recurring rate elements for 1/0 and 3/1 Unbundled Multiplexing are comprised of the following:
- 1/0 Multiplexing
- 1/0 Low Side Channelization
- 3/1 Multiplexing
Nonrecurring rate elements for 1/0 and 3/1 Unbundled Multiplexing are comprised of the following:
- 1/0 Unbundled Multiplexing
- 1/0 Low Side Channelization
- 3/1 Unbundled Multiplexing
Recurring rate elements for E-UDIT consist of the following:
- DS1 Facility
- DS3 Facility
- OC3 Facility
- OC12 Facility
- OC48 Facility
- OC192 Facility
Nonrecurring rate elements for E-UDIT consist of the following:
- DS1 Termination
- DS3 Termination
- OC3 Termination
- OC12 Termination
- OC48 Termination
- OC192 Termination
Recurring rate elements for the UDIT and E-UDIT combination consist of the following:
- UDIT Transport (Fixed)
- UDIT Transport (Per Mile)
- E-UDIT Transport (Fixed)
Nonrecurring rate elements for the UDIT and E-UDIT combination consist of the following:
- E-UDIT Termination
Nonrecurring rate elements for rearrangement include
- Single Office
- Dual Office
There are no recurring charges for rearrangement. If your Interconnection Agreement does not include this rearrangement nonrecurring charge, then the UDIT installation nonrecurring charge applies.
Recurring rate elements for Remote Node/Remote Port include:
- Remote Node at OC3, OC12, or OC48
- Remote Port at DS1 (on Remote Node OC3 or OC12)
- Remote Port at DS3 (on Remote Node OC3, OC12, or OC48)
- Remote Port at OC3 (on Remote Node OC12 or OC48)
- Remote Port at OC12 (on Remote Node OC48)
Nonrecurring rate elements for Remote Node/Remote Port include:
- Remote Port at DS1 (on Remote Node OC3 or OC12)
- Remote Port at DS3 (on Remote Node OC3, OC12, or OC48)
- Remote Port at OC3 (on Remote Node OC12 or OC48)
- Remote Port at OC12 (on Remote Node OC48)
A Private Line to UDIT conversion nonrecurring charge will be applied for conversion as is. If your Interconnection Agreement does not include this conversion nonrecurring charge, then the UDIT installation nonrecurring charge applies.
No volume or term discount plans are available for UDIT Products.
Rates
A nonrecurring charge applies to the installation of service(s) and in some states a disconnect service(s) charge will apply. Wholesale rates for this product or service, including tariff references and any applicable discounts, are provided in your current Interconnection, Resale, Commercial, or other governing agreement.
Tariffs, Regulations and Policy
Tariffs, regulations and policies are located in the state specific Tariffs/Catalogs/Price Lists.
When you submit your service request and facilities are not available, your request may be held for 90 business days. For exceptions and detailed information, refer to the Provisioning and Installation Overview.
Optional Features
No optional features are available with UDIT.
Features/Benefits
| Features | Benefits |
| D-UDIT allows you the ability to reserve transport facilities prior to the completion of your collocation build. |
|
| UDIT provides you the opportunity to lease transport from CenturyLink at wholesale rates |
|
Applications
See Features/Benefits.
Implementation
Product Prerequisites
If you are a new CLEC and are ready to do business with CenturyLink, view Getting Started as a Facility-Based CLEC. If you are an existing CLEC wishing to amend your Interconnection Agreement or your New Customer Questionnaire, information is located in the Interconnection Agreement.
Pre-Ordering
General pre-ordering activities are described in the Pre-Ordering Overview.
Border town characteristics, including a NPA/NXX matrix are described in the Pre-Ordering Overview.
The following information identifies the UDIT options that require unique pre-ordering activities.
Prior to submitting an S-UDIT request the CLECs must provide a Letter of Agency (LOA) to their CenturyLink Service Manager from the CLEC(s) who are providing the service from their collocation. The originating CLEC will submit the order for a UDIT. Both the originating and terminating locations must have CLEC collocation established, along with proper ICDF terminations, e.g., DS0, DS1, DS3, OCn, etc.
Before requesting M-UDIT involving multiple Independent Telcos, you need to determine which company will act as the Access Service Coordinator Exchange Carrier (ASC-EC) of the service request.
In order to request Remote Node/Remote Port you will need to contact your CenturyLink Service Manager to determine availability.
Ordering
General ordering activities are described in the Ordering Overview.
Unbundled Dedicated Interoffice Transport (UDIT) service requests are submitted using the following Access Service Ordering Guidelines (ASOG) forms:
| Product | UDIT, S-UDIT | D-UDIT | E-UDIT | M-UDIT | Unbundled Multiplexing |
| ASOG Form | DS0, DS1, DS3, OC3, OC12, OC48 | DS1, DS3, OC3, OC12, OC48 | DS1, DS3, OC3, OC12, OC48 | DS1, DS3, OC3, OC12, OC48 | 1/0, 3/1 |
| Access Service Request (ASR) | X | X | X | X | X |
| Additional Circuit Information (ACI) *only required if more than one circuit is ordered on the same request. |
X | X | X | X | X |
| Multiple Exchange (MULTI-EC) | X | ||||
| Transport (Transport Form) | X | X | X | X | X |
Field entry requirements are described in the Access Service Request (ASR) Forms.
To request OC192 UDITs and such higher bandwidth UDITs as evolve over time you will need to follow the Special Request (SR) Process outlined in Exhibit F your Interconnection Agreement. Contact your CenturyLink Service Manager if you are interested in this offering.
Service Request Scenarios and Requirements:
Extended UDIT (E-UDIT)
When requesting an E-UDIT or UDIT/E-UDIT Combination, your 11 character switch CLLI code as filed in the LERG is required in the "SECLOC" field on the ASR form. Your 11 character Specials ACTL CLLI code should be placed in the Remarks section of the ASR form. If you do not have a Specials ACTL CLLI code, CenturyLink will assign and provide one to you. When UDIT/E-UDIT Combination is ordered at a single bandwidth, the REMARKS section on the ASR form must contain "UDIT and E-UDIT Combination".
Dangling UDIT (D-UDIT)
Two service requests are required for D-UDIT. The first request is submitted to reserve the transport. You must include your temporary APOT/CFA information along with an entry in the REMARKS section on the ASR form stating the "Request is for D-UDIT". The second service request for rearrangement is submitted using the ASR form after your collocation is completed. The final APOT/CFA you received from CenturyLink must be included on the ASR form to request rearrangement of the UDIT. The UDIT is activated the service once the rearrangement request has been completed.. More information about APOT/CFA is located in Collocation - General Information.
Split UDIT (S-UDIT)
The AGAUTH field on the ASR form must be populated for S-UDIT.
Meet-Point UDIT (M-UDIT)
To request M-UDIT, you must populate ASC-EC field on the ASR form identifying the coordinator of the service request and submit all completed ASOG forms to CenturyLink and the independent Telcos involved.
Unbundled Multiplexing
Unbundled Multiplexing requires a separate ASOG service request from the UDIT service request. The 3/1 Unbundled Multiplexing service request requires all DS1 low-side channels to be requested at the same time. The 1/0 Unbundled Multiplexing service request allows you to request the DS0 low-side channels at the same time you place the Unbundled Multiplexing service request or at a subsequent date. For 3/1 and 1/0 Unbundled Multiplexing you can utilize the ACI form to request multiple low-side channels of the same technical specification. Unique low-side channels require the completion of the ASR form and the Transport form for each channel.
Extended UDIT (E-UDIT)
In conjunction with an existing E-UDIT you may request Remote Node/Remote Port at your wire center or IXC POP, if a CenturyLink provided Remote Node is already installed and spare capacity exists. Additional Remote Ports can also be requested subsequent to the initial order. Multiple remote ports may be requested on one UDIT request. At least one Remote Port must be requested with a Remote Node. Remote Node/Remote Port details need to be specified in the REMARKS section of the ASR Form; e.g., "1 OC3 Remote Node and 3 DS3 Ports". Refer to your Interconnection Agreement. In states where the distinction between E-UDIT and UDIT has been removed, the Remote Node/Remote Port will be available with UDIT terminations in the CLEC Wire Center or IXC POP.
Convert existing Private Line/Special Access circuit to UDIT
The Circuit ID and NCI codes will change when converting to UDIT. This will require two service requests. A disconnect service and a new connect service request will complete this record only change. Both requests must be related using the RPON field on the ASR forms. You may also populate the project field on your ASR forms with a project name of your choice which will automatically assign the service requests to the same Customer Communications Technician (CCT) - Implementor. The REMARKS section on both ASR forms must contain:
"Conversion of Private Line to UDIT. Record change only. Reuse all facilities. No physical work required"
Rearrangements
Rearrangement allows you to rearrange your UDIT terminations on your demarcation point, or change your UDIT options. You will need to submit a service request with appropriate termination information such as CFA and NC/NCI Codes. Single office rearrangements are limited to changing terminations or options within a single wire center (one end of the circuit only). Dual office rearrangements are used to change options or terminations in two wire centers (both ends of the circuit). Rearrangement does not allow for a change in physical location of either end of the circuit.
Service Intervals guidelines are located in the SIG.
Provisioning and Installation
General provisioning and installation activities are described in the Provisioning and Installation Overview.
Firm Order Confirmation (FOC) and other UDIT service intervals are located in the SIG.
For order status information for UDIT above DS0 signal levels, refer to the Customer Electronic Maintenance and Repair (CEMR). This tool requires a digital certificate. For additional information about CEMR, access the Customer Electronic Maintenance and Repair (CEMR).
Design Layout Record (DLR) allows you to obtain design layout records for circuits leased by your company. The Design Layout Record (DLR) is requested through the ASR ordering process.
A jeopardy occurs on service request if a condition exists that threatens timely completion. Jeopardy notifications are described in the Provisioning and Installation Overview.
Maintenance and Repair
General maintenance information and repair activities are described in the Maintenance and Repair Overview.
Maintenance and repair problems are reported to the Wholesale Repair Center 1-800-223-7881. If your end-users experience problems with their local circuits or services, provisioned with CenturyLink provided products and services, their first point of contact is you, their local service provider. You must isolate the trouble and verify it is not the customer-owned equipment or cable before calling.
Trouble isolation and testing is a joint process. Details of this process are described in the Test Results Information download found in the Maintenance and Repair Overview under CenturyLink Design Services Trouble Ticket Codes and CenturyLink Non-Design Disposition & Cause Codes.
Billing
Integrated Access Billing System (IABS) billing is described in Billing Information - Integrated Access Billing System (IABS™).
Training
Local CenturyLink 101 "Doing Business With CenturyLink"
- This introductory web-based training course is designed to teach the Local CLEC and Local Reseller how to do business with CenturyLink. It will provide a general overview of products and services, CenturyLink billing and support systems, processes for submitting service requests, reports, and web resource access information. Click here for Course detail and registration information.
View additional CenturyLink courses in the Course Catalog.
Contacts
CenturyLink contact information is located in Wholesale Customer Contacts.
Frequently Asked Questions (FAQs)
1. How can facilities be reserved during collocation builds?
You can reserve facilities by submitting a D-UDIT request. For D-UDIT you will need to submit two ASR's. The first ASR must contain the temporary APOT/CFA information and the remarks section must state that the request is for a D-UDIT. This ASR is submitted to reserve the transport. The second ASR is submitted at the time the collocation is complete. At this time you will be provided the final APOT/CFA location from CenturyLink. The final APOT/CFA will be needed in order to request Rearrangement of the UDIT which activates the service.
2. Will CenturyLink construct facilities for UDIT services?
UDIT is provided where facilities exist and/or where you have CLEC Requested UNE Construction per the terms and conditions of your Interconnection Agreement. Refer to the Negotiations Template Agreement, Section 9.19, which addresses options available to you when facilities do not exist. If it is determined that facilities do not exist between the two locations, CenturyLink will notify you that facilities are not available and the order will be cancelled.
3. What are the available pricing plans for UDIT?
UDITs are priced based on current Interconnection Agreement. There are no term or volume discounts available for UDITs.
Last Update: February 3, 2012
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