Historical
ATIS-0300231.02.2003(R2007)
DS1 - Layer 1 In-Service Digital Transmission Performance Monitoring
This standard provides performance monitoring functions and requirement applicable to DS1 digital transmission signals. This standard provides functional requirements to support maintenance and is not meant to be an equipment specification. Formerly known as T1.231.02-2003(R2007).
Alliance For Telecommunications Industry Solutions [atis]