GB/T 15409-2008
ActiveFrame structure for synchronous digital hierarchy signal
同步数字体系信号的帧结构
Application Summary AI generated
GB/T 15409-2008 specifies the frame structure for synchronous digital hierarchy (SDH) signals, defining the byte arrangement, overhead functions, and payload mapping used in optical fiber transmission networks. It is applied in China's telecommunications infrastructure for designing, testing, and interconnecting SDH equipment such as multiplexers, cross-connects, and line terminals. This standard ensures compatibility and synchronization in backbone networks, metro transport systems, and access networks carrying voice, data, and video services.
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