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ETSI ETS 300 417-2-1
- Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 2-1: Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) physical section layer functions
- standard by European Telecommunications Standards Institute, 04/01/1997
- Publisher: ETSI
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Functional requirements for physical layers of SDH interfaces on all types of equipment based on the generic principles described in part 1-1.