GB/T 15940-1995
AbolishedBasic multiplexing structure for synchronous digital hierarchy signals
同步数字体系信号的基本复用结构
Application Summary AI generated
This standard defines the basic multiplexing structure for Synchronous Digital Hierarchy (SDH) signals, specifying how lower-rate tributary signals (such as PDH signals) are mapped, aligned, and multiplexed into higher-rate SDH frames. It is applied in the design, testing, and operation of telecommunications transmission networks, particularly for optical fiber-based backbone and metro networks. The standard ensures interoperability between equipment from different manufacturers in China’s public telecom infrastructure.
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