China Synchronous digital GB Standards Search Result

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	GB/T 51281-2018 Synchronous digital Hierarchy (SDH) Optical Fiber Transmission System Engineering Acceptance Criteria 同步数字体系（SDH）光纤传输系统工程验收标准 - 英文版
	GB/T 15409-2008 Frame structure for Synchronous digital hierarchy signal 同步数字体系信号的帧结构 - 英文版
	GB/T 16712-2008 Characteristics of Synchronous digital hierarchy (SDH) equipment functional blocks 同步数字体系（SDH）设备功能块特性 - 英文版
	GB/T 15940-2008 Basic multiplexing structure for Synchronous digital hierarchy signals 同步数字体系信号的基本复用结构 - 英文版
	GB/T 14731-2008 Synchronous digital hierarchy (SDH) bit rates 同步数字体系（SDH）的比特率 - 英文版
	GB/T 16814-2008 Methods of measurement for Synchronous digital Hierarchy (SDH) optical fiber cable line system 同步数字体系 (SDH) 光缆线路系统测试方法 - 英文版
	GB/T 15941-2008 Requirements for Synchronous digital hierarchy (SDH) Optical Fiber Cable Line Systems 同步数字体系（SDH）光缆线路系统进网要求 - 英文版
	GB/T 20185-2006 Optical interface requirements for equipments and systems relating to the Synchronous digital hierarchy 同步数字体系设备和系统的光接口技术要求 - 英文版

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