This Generic Requirements (GR) document provides the Telcordia view of physical layer generic criteria for the Synchronous Optical
Network (SONET) Inter-Carrier Interface (S-ICI). It sets forth a practical subset of SONET parameters for use at six S-ICI reference
configurations at four line
rates, covering physical media dependent characteristics, the functionality at the SONET Section, Line, and Path layers, and other
It also addresses the use of the DCC, security issues, customer network management, and includes three- and four-node architectures
with dual link S-ICIs for line and node protection.
When using GR-1374, you may need to refer to GR-253, GR-326, GR-436, and ANSI T1.101, T1.105, and T1.404. You may also
want to refer to GR-499, GR-815, and/or ANSI T1.231.