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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 Specifications Engineering |
 English PDF |
| YD 5039-2009 |
Provisional Specifications on Enironment Protection for Engineering Construction of Telecommunications 通信工程建设环境保护技术暂行规定 |
China Telecommunication
Standards Provisional Specifications Engineering |
English PDF |
| YD/T 5145-2007 |
Provisional Specifications of Engineering Acceptance for Automatically Switched Optical Network (ASON) 自动交换光网络(ason)工程验收暂行规定 |
China Telecommunication
Standards Provisional Specifications Engineering |
English PDF |
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