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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 5185-2010 |
Provisional Design Specifications for IP multimedia subsystem (IMS) Engineering ip多媒体子系统(ims)核心网工程设计暂行规定 |
China Telecommunication
Standards Provisional Specification Design |
 English PDF |
| YD/T 5170-2009 |
Provisional Specification of Engineering Design for Individuation Ring Back Tone Platform 个性化回铃音平台工程设计暂行规定 |
China Telecommunication
Standards Provisional Specification Design |
English PDF |
| YD 5177-2009 |
Provisional Specification of Design for Internet Network Security 互联网网络安全设计暂行规定 |
China Telecommunication
Standards Provisional Specification Design |
English PDF |
| YD/T 5182-2009 |
Provisional Specification of Mobile Basestation Design for The Third Generation 第三代移动通信基站设计暂行规定 |
China Telecommunication
Standards Provisional Specification Design |
English PDF |
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