Private Line: DS1

QWEST PRIVATE LINE DS-1 SERVICE

DIGITAL TRANSPORT FOR VOICE, VIDEO AND DATA

Many businesses accommodate their growing voice, data and video transport needs by purchasing additional low-speed circuits. Over time, that can add up to excessive circuits and expense. Qwest^® DS-1 Service can reliably and securely aggregate that traffic on a single, cost-effective, high-speed circuit, eliminating the need for multiple low-speed channels.

Description

Qwest DS-1 Service is a dedicated, full duplex, point-to-point, high-capacity Private Line transport service (PLTS) that provides transmission of isochronous serial data at 1.544Mbps. The service has the capacity of 24 voice-equivalent channels. Because the transmission is digital, the signal is clean and free of crosstalk, amplified noise and distortion. DS-1 channels are provided between customer-designated premises or between customer-designated premises and a Qwest central office. The service is provisioned on copper, fiber and in some instances, microwave radio. In some high-density cities, DS-1 is provisioned on a synchronous optical network (SONET)-based interoffice network that connects key serving wire centers.

Features

DS-1 offers a variety of optional features and functions:

• Central office multiplexing—Has the capacity of 24 voice-equivalent channels.
• Central office multiplexer-to-multiplexer connecting arrangement interconnects at the DS-1 level.
• Command a Link^™ gives you control of services.
• Clear channel capability transports data without constraints.
• Environmental cabinet terminates service on a pole or outside a building.
• Protection options:
  • Self-healing alternate route protection (SHARP) protects the local loop.
  • SHARP Plus extends protection to the interoffice portion of the circuit.
  • Automatic loop transfer protects against failure of copper facilities.
• The main characteristics of DS-1 are framing and line code:
  • Framing options include D4 framing, extended super frame (ESF), non-ANSI (American National Standards Institute) and free framing.
  • Line code options, identified by network channel interface (NCI) codes, include alternate mark inversion (AMI) and binary eight zero substitution (B8ZS).

Benefits

• Ensures reliable, secure transport of high-volume communications between two locations.
• Aggregates your point-to-point voice, data and video traffic on a single dedicated, cost-effective circuit.
• Improves response time.
• Provides clean, pure transmissions.
• Provides a service guarantee—provisioning and repair.
• Enhances the quality and utility of your service with optional features.

How it works

DS-1 channels can be provided between two of your designated locations, or between one location and a Qwest wire center.

Why Buy From Qwest?

• Qwest provides self-healing alternate route protection option, which offers instantaneous service restoration.
• Available throughout the 14-state Qwest local service territory.
• Discounts are available with regional commitment program and term discount pricing plans.
• Contract terms stabilize your cost over a long term.
• Service level agreements guarantee provisioning due dates and provide credit for service interruptions.
• Qwest is a facilities-based telecommunication provider with a legacy of experience and service.

Other Products Available From Qwest

In addition to Qwest DS-1 Service, Qwest has an array of products to meet your needs, including:

• Qwest^® DS-3 Service
• Qwest® Synchronous Service Transport (SST)
• Qwest^® Self-Healing Network Service (SHNS)