This standard specifies the technical requirements for Synchronous Digital Hierarchy (SDH) multiplexing equipment. This standard is applicable to the SDH system used in my country's public telecommunication network. Similar systems in private telecommunication networks can also refer to this standard.
GB/T 16712-1996 history
2008GB/T 16712-2008 Characteristics of synchronous digital hierarchy(SDH) equipment functional blocks
1996GB/T 16712-1996 Specifications for Synchronous Digital Hierarchy (SDH) multiplex equipment