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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 1938.1-2009 |
Test method for Session Initiation Protocol(SIP). Part1:Basic Session Initiation Protocol 会话初始协议（sip）测试方法 第1部分：基本的会话初始协议 |
China Telecommunication
Standards Part1:Basic |
 English PDF |
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