ISO/IEC TR 22767:2005
Information technology -- Telecommunications and information exchange between systems -- Using CSTA for SIP phone user agents (uaCSTA)
Abstract
The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site.
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.
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.
Look inside
Additional information
| Publication type | Technical Report |
|---|---|
| Publication date | 2005-08-26 |
| Edition | 1.0 |
| Available language(s) | English |
| TC/SC | ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systemsrss |
| ICS | 35.100.30 - Network layer |
| Pages | 82 |
| File size | 604 KB |
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