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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 744-2009 |
Technical requirements and test methods for digital microwave telecommunication equipments (systems) of plesiochronois digital hierarchy (PDH) 准同步数字系列（pdh）数字微波通信设备和系统技术要求及测试方法 |
China Telecommunication
Standards Technical Requirements PDH |
 English PDF |
| YD/T 1958-2009 |
Technical Requirements for PDH Virtual Concatenation and GFP Mapping 准同步数字体系（pdh）虚级联和通用成帧规程（gfp）帧映射技术要求 |
China Telecommunication
Standards Technical Requirements PDH |
English PDF |
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