ÖNORM EN 300462-4-2 V 1.1.1:2000-03
Действует
Transmission and Multiplexing (TM) - Generic requirements for synchronization networks - Part 4-2: Timing characteristics of slave clocks suitable for synchronization supply to Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) equipment - Implementation Conformance Statement (ICS) proforma specification
