ABSTRACT: GR-510 replaces TR-TSY-000510, Issue 2, and Revisions 1 and 2, but contains NO TECHNICAL CHANGES from that original document. It has been issued strictly to conform with the new Telcordia Technologies document format and GR process, and carries a new issue number and date.

This Generic Requirements (GR) document describes the line and trunk termination requirements for Analog Interfaces, Digital Interfaces, Support System Interface Protocol, and Central Office Cross Connection Systems (DFs [Distributing Frames] and DSX's [Digital Signal Cross-Connects]).