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ATIS-0300231.02.2019
DS1 - Layer 1 In-Service Digital Transmission Performance Monitoring
This standard provides performance monitoring functions and requirements applicable to DS1 digital transmission signals. This standard provides functional requirements to support maintenance and is not meant to be an equipment specification. This standard is one of a set of standards which are applications utilizing the common criteria as specified in ATIS-0300231.2013
Alliance For Telecommunications Industry Solutions [atis]