ISO/IEC TR 22767-2005 信息技术.系统间远程通信和信息交换.SIP电话用户代理(uaCSTA)用CSTA的使用

标准号：ISO/IEC TR 22767-2005
中文标准名称：信息技术.系统间远程通信和信息交换.SIP电话用户代理(uaCSTA)用CSTA的使用
英文标准名称：Information technology - Telecommunications and information exchange between systems - Using CSTA for SIP phone user agents (uaCSTA)
标准类型：M11
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：M11
国际标准分类号：33.040.30;35.100.30
适用范围：The Session Initiation Protocol (SIP) is a control (signalling) protocol for creating, modifying, and terminatingsessions with one or more participants. These sessions include Internet telephone calls, multimediadistribution, and multimedia conferences.CSTA standardizes a very powerful and flexible set of application services to observe and control voice andnon-voice media calls as well as control and observe non-call related features.This Technical Report describes how CSTA can be used to provide a subset of CSTA call control functionality,called 1st party call control, for SIP user agents. The term uaCSTA (for user agent CSTA) refers totransporting ECMA-323 (CSTA XML) messages over a SIP session.uaCSTA leverages SIP mechanisms to provide a highly featured, robust, and extensible set of features tosupport applications in the Enterprise environment.uaCSTA can be implemented by several different types of SIP user agents:• directly by a SIP user agent on a SIP phone• uaCSTA can also be implemented by a SIP B2BUA to augment 3PCC functionality• by a proxy server that is front-ending a PBX.