YDT 1522.4-2009 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、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......

2、..…..3术语v定义和缩略语.................4概述.......................…..............................................................................…················24.1SIP协议在软交换网络中的应用......................................….................................……'24.2对用户标识/编号的要求……....................…...........

3、..................................…........…"34.3传输机制........……...........................….........…...."....….........….........…················45SIP消息............................................….......................................…........................…'45.1SIP请求消息…........…...........

4、.......…...........................….........….........................…45.2SIP响应消息..................................................................................….................…55.3软交换支持的SIP头宇段.......................…...........................…..................…··········75.4SIP-l消息…....

5、................................................................……........….................…95.5异常处理.........................................….........…….....................…...................……96SIP在软交换网络中基于呼叫控制的应用......................................................·····················106.

6、1概述............................................................…................…............................…"106.2基本业务………………………………………………………………………………………………106.3补充业务..........................….........……........…...............................…···················137其他规定........…..................

7、.........…......................................................···················167.1连通性检查..................................................….........….........….........................…167.2对预置条件的支持...............