ydt1522.4-2009会话初始协议（sip）技术要求第4部分：基于软交换网络呼叫控制的sip协议

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1、YDT1522.4-2009会话初始协议（SIP）技术要求第4部分：基于软交换网络呼叫控制的SIP协议ICS33.040.30M12YO中华人民共和国通信行业标准YDfT1522.4-2009会话初始协议(SIP)技术要求第4部分:基于软交换网络呼叫控制的SIP协议TechnicalRequirementsforSessionInitiationProtocolPart4SIP'sApplicationsaboutcallcontrolBasedonSoftswitchNetwork2009-06-15发

2、布2009-09-01实施中华人民共和国工业和信息化部发布VOlT1522.4-2009目次…II1范围.........................…·2规范性引用文件........…..3术语v定义和缩略语.................4概述.......................…..............................................................................…················24.1SIP协议在软交换

3、网络中的应用......................................….................................……'24.2对用户标识/编号的要求……....................….............................................…........…;34.3传输机制........……...........................….........…....;....….........…....

4、.....…················45SIP消息............................................….......................................…........................…'45.1SIP请求消息…........…..................…...........................….........….........................…45.2SIP响应消息

5、..................................................................................….................…55.3软交换支持的SIP头宇段.......................…...........................…..................…··········75.4SIP-l消息…..................................................

6、..................……........….................…95.5异常处理.........................................….........…….....................…...................……96SIP在软交换网络中基于呼叫控制的应用......................................................·····················106.1概述......

7、......................................................…................…............................…;106.2基本业务………………………………………………………………………………………………106.3补充业务..........................….........……........…...............................…···················137其他规

8、定........…...........................…......................................................···················167.1连通性检查..................................................…........