Full Description

Universal Digital Channel (UDC) Generic Requirements and Objectives

Document Number TR-TSY-000398
Issue Number 01
Issue Date Mar 1990
Replaces TA-TSY-000398 Issue01

    ABSTRACT: A Universal Digital Channel (UDC) system consists of a Central Office Terminal (COT), a Remote Digital Terminal (RDT), and the Digital Subscriber Line (DSL) transport facility. Functionally, the UDC is a small Digital Loop Carrier (DLC) system. It uses the 2-wire transmission technology developed for Integrated Services Digital Network (ISDN) Basic Access, known as the DSL, to provide a variety of services over a single pair (loop).

    This Technical Reference (TR) presents the Telcordia view of the overall system functions required to support a UDC in the local telephone loop. It describes various ways in which UDC can be deployed and defines the generic requirements and objectives for each deployment scheme.

    This TR describes service interfaces that can be provided by a UDC defines the relevant service parameters, and provides the generic requirements for powering, monitoring, and testing the UDC equipment.

    Revision 1 replaces Bulletin 1. It revises the TR to include generic requirements for the use of dc signatures by the UDC Self-Test Interface and provides a section on metallic access to the DSL.

    Modifications to existing criteria are also made to clarify the existing criteria. Specifically, Section 6, "Operations Interfaces," and Section 7, "Operations Features," are combined into Section 7 under the heading "Maintenance Capabilities and Operations Features."

    Revision 1 included in this document.

    TR-TSY-000398 replaces TA-TSY-000398.

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