Digital Signal Level 1 (DS1) is a point-to-point high capacity Private Line digital transport service that provides transmission of isochronous serial data at 1.544 Megabits (Mbps) and has the capacity of 24 voice equivalent channels. Because the transmission is digital from end-to-end, the signal is clean and pure -free of cross talk, amplified noise and distortion.
Digital Signal Level 1 (DS1) Channels are provided between customer-designated premises or between a customer-designates premise and a Qwest Hub. DS1 is provisioned on copper, fiber and, in some instances, microwave radio. In some high-density cities, DS1 is provisioned on Synchronous Optical Network (SONET) - based, interoffice transport network architecture improvement that connects key Serving Wire Centers.
The main characteristics of DS1 are Framing and Line Code, which is identified by the Network Channel Interface (NCI™) codes.
Framing options are:
Line Code options are:
Digital Signal Level 1 (DS1) is a dedicated, end-to-end digital transport service provisioned for full duplex, point-to-point transmission of isochronous serial data at 1.544 megabits per second. The 1.544 Mbits/s consist of 1.536 Mbit/s of customer information and .008 Mbits for other use (e.g., framing and synchronization)
Product Diagram
Digital Signal Level 1 (DS1) is available where facilities exist throughout Qwest's 14-state local service territory.
Digital Signal Level 1 (DS1) is available in Qwest designated wire centers where appropriate digital facilities are technically available.
The National Exchange Carrier Association (NECA) Tariff FCC No. 4 identifies:
Digital Signal Level 1 (DS1) is provided in compliance with provisions stated per Federal Communications Commission (FCC) Tariff #1, Sections 7 & 17 and/or the relevant State Access Tariffs. For more information contact your Account Team/Sales Executive.
Services that extend to designated high voltage (HV) environments are required to have high voltage protection (HVP). HVP devices may be provided by you, the end user, or may be requested from Qwest. General High Voltage Protection activities are described in High Voltage Protection.
Washington CLEC Customers - Alternate Form of Regulation (AFOR)
Effective December 2007, Qwest makes available the terms of the existing Washington Qwest Performance Assurance Plan (PAP) to Unbundled Network Elements (UNE) substitutes under the terms of the Washington Alternative Form of Regulation. CLECs may purchase DS1 special access/private line services in Washington wire centers as substitutes for DS1 UNE loop, UNE transport (UDIT) or Enhanced Extended Link (EEL) for inclusion in their WA PAP results, consistent with the terms of the Commercial Agreement for the PAP and providing Qwest with the required information identifying the DS1 special access/private line service as a UNE substitute. You will be asked to complete the Eligible Substitute List Spreadsheet and return it to your Qwest Service Manager or send an email indicating there are no embedded base circuits to be included under the agreement. Additional information is described in the Washington CLEC Customers - Alternative Form of Regulation (AFOR) download.
Technical Publications
Technical characteristics, including Network Channel/Network Channel Interface (NC/NCI™) codes, are described in Technical Publication, Qwest DS1 Service and Qwest DS1 Rate Synchronization Service, 77200. or Technical Publication, 1.544 Mbit/s Channel Interface, 77375.
Recurring charges are comprised of the following rate elements:
Nonrecurring charges are comprised of the following rate elements:
Digital Signal Level 1 (DS1) is priced in both the Interstate and the Intrastate tariff. Pricing tools are available to assist you in pricing all available options, whether you select one of the flexible pricing plans with variable terms or a non-plan pricing option.
The Interstate Pricing Plans are 36 months and 60 months. The Regional Commitment Program (RCP) is 48 months.Intrastate Service is offered on one-year through seven-year contract terms.
Contact your Account Team / Sales Executives and Service Managers for assistance or see the DS1 Tariff FCC1 Access Service Tariff or applicable Intrastate tariff.
Tariffs, regulations and policies are located in the state specific Tariffs/Catalogs/Price Lists.
Interstate product information for DS1 service is accessible in the FCC Tariff 1 Section 7 or 17.
Intrastate product information for DS1 service is located in the state specific Tariffs/Catalogs/Price Lists.
Optional Features
Optional Features and Functions may be added to DS1 Service to improve its quality or its utility to meet specific communication requirements. Available DS1 Optional Features and Functions include:
* NOTE: SHARP Plus is no longer available for new service requests. The grandparenting action will affect you in the following ways:
For additional information about the grandparenting of SHARP Plus contact your Qwest Service Manager.
| Features | Benefits |
| Security | |
| Reliability | |
| Availability | |
| Economies of scales | |
| Responsiveness | Service and repair guarantees are offered on DS1 service, for details see Tariffs/Catalogs/Price Lists. |
| Timely provisioning |
If you are an Interexchange Carrier (IXC), Internet & Data (ISP) or Wireless Service Provider (WSP) and have questions regarding your contract with Qwest, contact your Account Team / Sales Executives and Service Managers for more information.
Pre-Ordering section does not apply to DS1.
Digital Signal Level 1 (DS1) service requests are submitted using the following Access Service Ordering Guidelines (ASOG) forms:
For UNE to a Private Line Transport
When converting a UNE "As Is" to Qwest Private Line Transport (PLT) or Special Access (SA) Tariff Services, one (1) ASR is required.
The valid ASR entries are:
| ASR Field | Valid Entries |
| ACT | C |
| PROJECT | UNETOPLT |
| ECCKT | UNE circuit ID (A new DS1/Circuit ID will be provided on FOC) |
| RMK | Transition from UNE to DS1. Records change only. No physical work. Reuse facilities. (Include UNE Billing Number if available) |
| UNE | Must be Blank |
Field entry requirements are described in the Access Service Request (ASR) Forms.
A Design Layout Record (DLR) request is requested through the ASR service order process.
Additional information on placing service requests is available by contacting your Account Team / Sales Executives and Service Managers.
FOC intervals are found in the Service Interval Guide (SIG) for Access Services.
ANSI Performance Report Messages (PRM)
ANSI PRM may be used to locate the trouble source on a T-1 circuit to either the telco or customer side of the demarc. General ANSI PRM activities are described in the Provisioning and Installation Overview and Technical Publication, 1.544 Mbit/s Channel Interface, 77375.
The DS1 Service maintenance and repair problems are reported to the Qwest Customer Service Center 1-800-954-1211. If your end-users experience problems with their local circuits or services, provisioned with Qwest provided products and services, their first point of contact is you, their local service provider. You or your end-user must isolate the trouble and verify it is not the customer-owned equipment or cable before calling.
Integrated Access Billing System (IABS) billing is described in Billing Information - Integrated Access Billing System (IABS™).
Digital Signal Level 1 (DS1)
View additional Qwest courses by clicking on Course Catalog.
Qwest contact information is located in Wholesale Customer Contacts.
1. What is the charge for moving a contracted service to
another location?
The service can move to another location as long as the total value
of the new service agreement equals 115 percent of the remaining
value of the service being removed from the existing agreement.
2 What is the Termination Liability if the contracted service
is disconnected?
When the service is disconnected prior to the expiration date of
the service agreement, the termination liability is 40 percent of
the remaining value of the service agreement. A minimum service
period of 12 months may be applicable.
Last Update: November 8, 2008
NC/NCI™ is a trademark of Telecordia Technologies Inc.
IABS™ is a trademark of Qwest Communications International, Inc.
COMMAD A LINKsm is a service mark of Qwest Communications International, Inc.
