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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 2529-2013 |
Technical requirements and test methods for digital microwave telecommunication equipments and systems of synchronous digital hierarchy(SDH) sdh数字微波通信设备和系统技术要求及测试方法 |
China Telecommunication
Standards Requirement synchronous digital |
 English PDF |
| YD/T 1631-2007 |
Technical Requirements for Synchronous Digital Hierarchy (SDH)virtual concatenation and link capacity adjuxtment scheme 同步数字体系(sdh)虚级联及链路容量调整方案)技术要求 |
China Telecommunication
Standards Requirement synchronous digital |
English PDF |
| YD/T 1022-1999 |
Requirement of synchronous digital hierarchy (SDH) equipment function 同步数字体系(sdh)设备功能要求 |
China Telecommunication
Standards Requirement synchronous digital |
English PDF |
| YD/T 877-1996 |
Technical requirement for electric interfaces of synchronous digital hierarchy (SDH) multiplexing equipments and systems 同步数字体系（sdh）复用设备和系统的电接口技术要求 |
China Telecommunication
Standards Requirement synchronous digital |
English PDF |
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