ATIS/ANSI 0300231.2013

This standard provides performance monitoring (PM) functions and requirements applicable to Layer 1 transmission signals for the covered levels of the North American transmission hierarchy. This standard provides functional requirements to support maintenance and is not meant to be an equipment specification. This standard, and its subparts, supersedes and replaces ATIS-0300231.2003 (R2007)in its entirety.

This product replaces:ATIS/ANSI 0300231.2003(R2007) - Layer 1 In-Service Transmission Performance Monitoring (formerly T1.231-2003 (R2007) )