Simple Gateway Control Protocol
The Simple Gateway Control Protocol (SGCP) is a communications protocol used within a voice over Internet Protocol (VoIP) system. It has been superseded by the Media Gateway Control Protocol (MGCP), an implementation of the media gateway control protocol architecture.
The Simple Gateway Control Protocol was published in 1998 by Christian Huitema and Mauricio Arango,[1] as part of the development of the "Call Agent Architecture" at Telcordia Technologies (formerly Bellcore). In this architecture a media gateway controller (MGC) controls media gateways (MGs) that provide either access to the public switched telephone network (PSTN) or connect residential telephones. Later implementation of the architecture refer to the controller as a softswitch. Communication between media gateway controllers is handled by other protocols, such as the Session Initiation Protocol (SIP).
SGCP was merged with the Internet Protocol Device Control (IPDC) proposal sponsored by Level3 Communications. This led to the definition of the Media Gateway Control Protocol Version 1.0, jointly submitted to the IETF by the authors of SGCP and IPDC in November 1998. MGCP was used with other components as a basis for a formal protocol specification resulting in the Megaco/H.248 protocol.
References
- ^ http://huitema.net/voip/sgcp-v1-0.html Initial v1 draft, published on Christian Huitema's web site
External links
- SGCP pages at Telcordia Description of SGCP and the call agent architecture.
- [1] Simple Gateway Control Protocol (SGCP) Version 1.1 draft, July 30, 1998 by Mauricio Arango and Christian Huitema
- [2] VoIp protocols -SGCP