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
Transmission and Multiplexing (TM) - Generic requirements of transport functionality of equipment - Part 3-1: Synchronous Transport Module-N (STM-N) regenerator and multiplex section layer functions
Transmission and Multiplexing (TM) - Generic requirements of transport functionality of equipment - Part 4-1: Synchronous Digital Hierarchy (SDH) path layer functions
Transmission and Multiplexing (TM) - Generic requirements for synchronization networks - Part 2-1: Synchronization network architecture based on SDH networks