ETSI EN 300 417-2-2 English Printed Edition English PDF Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 2-2: Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) physical section layer functions; Implementation Conformance Statement (ICS) proforma specification

standard published 02/01/1999 by European Telecommunications Standards Institute