ISO/IEC TR 22767:2005

Title

Language: EN Information technology -- Telecommunications and information exchange between systems -- Using CSTA for SIP phone user agents (uaCSTA)

Abstract

Language: EN 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: directly by a SIP user agent on a SIP phone, uaCSTA can also be implemented by a SIP B2BUA to augment 3PCC functionality, and by a proxy server that is front-ending a PBX.

Language(s)
Language: EN
Edition
1.0
Date of issue
26.08.2005
ISO/IEC JTC 1/SC 6
ICS Codes
35.100.30
Publication number
22767
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