ISO/IEC TR 22767:2005 信息技术 系统间电传视讯和数据交换 SIP电话用户代理商（uaCSTA） 用CSTA
标准编号：ISO/IEC TR 22767:2005
中文名称：信息技术 系统间电传视讯和数据交换 SIP电话用户代理商（uaCSTA） 用CSTA
英文名称：Information technology — Telecommunications and information exchange between systems — Using CSTA for SIP phone user agents (uaCSTA)
发布日期：2005-08
标准范围
ISO/IEC TR 22767:2005描述了如何使用CSTA来为会话发起协议(SIP)用户代理提供CSTA呼叫控制功能的子集，称为第一方呼叫控制。术语uaCSTA（用于用户代理CSTA）是指在SIP会话上传输ECMA-323（CSTA XML）消息。SIP是一种控制（信令）协议，用于创建、修改和终止与一个或多个参与者的会话。这些会话包括互联网电话呼叫、多媒体分发和多媒体会议。CSTA标准化了一组非常强大和灵活的应用服务，以观察和控制语音和非语音媒体呼叫，以及控制和观察非呼叫相关的功能。uaCSTA利用SIP机制提供一组高度功能化、健壮和可扩展的功能来支持企业环境中的应用。uaCSTA可以由几种不同类型的SIP用户代理实现:直接由SIP电话上的SIP用户代理实现，uaCSTA也可以由SIP B2BUA实现以增强3PCC功能，以及由PBX前端的代理服务器实现。
ISO/IEC TR 22767:2005 describes how CSTA can be used to provide a subset of CSTA call control functionality, called first party call control, for Session Initiation Protocol (SIP) user agents. The term uaCSTA (for user agent CSTA) refers to transporting ECMA-323 (CSTA XML) messages over a SIP session.
SIP is a control (signalling) protocol for creating, modifying, and terminating sessions with one or more participants. These sessions include Internet telephone calls, multimedia distribution, and multimedia conferences.
CSTA standardizes a very powerful and flexible set of application services to observe and control voice and non-voice media calls as well as control and observe non-call related features.
uaCSTA leverages SIP mechanisms to provide a highly featured, robust, and extensible set of features to support applications in the Enterprise environment.
uaCSTA can be implemented by several different types of SIP user agents:
标准预览图
