Defines the requirements for an equipment to perform in-service monitoring of digital signals at bit rates of 2, 8, 34 and 140 Mbit/s using the frame alignment signal.
Keywords
– frame alignment signal monitoring;
– frame analyser;
– in-service monitoring;
– measurement;
– tester.
Section 1 applies to all four bit rates (2048, 8448, 34 368 and 139 264 kbit/s).
Section 2 provides additional information applicable to 2048 kbit/s signals only.