Skinny Client Control Protocol: Difference between revisions

Revision as of 07:10, 31 March 2005

Revision as of 15:48, 8 April 2005

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'''SCCP''' is a proprietary terminal control protocol originally developed by SeliusSelsius Corporation. It is now owned and defined by [[Cisco Systems, Inc.]] as a messaging set between a skinny client and the Cisco [[CallManager]]. Examples of skinny clients include the Cisco 7900 series of IP phone such as the [[Cisco 7960]], [[Cisco 7940]] and the [[802.11b]] wireless [[Cisco 7920]]. Skinny is a lightweight protocol which allows for efficient communication with Cisco Call Manager which may act as a proxy for signalling of call events with other common protocols such as [[H.323]], [[SIP]], [[ISDN]] and/or [[MGCP]].

A skinny client users [[TCP/IP]] to and from one or more Call Managers in a [[cluster]]. RTP/[[UDP]]/IP is used to and from a similar skinny client or H.323 terminal for the bearer traffic (real-time audio stream). SCCP is a stimulus-based protocol and is designed as a communications protocol for hardware endpoints and other embedded systems, with significant CPU and memory constraints.

Cisco acquired SCCP technology when it acquired SeliusSelsius Corporation in the late 1990's. As a remnant of the SeliusSelsius origin of the current Cisco IP phones, the default device name format for registered Cisco phones with CallManager is SEP -- as in ''SeliusSelsius Ethernet Phone'' -- followed by the [[MAC address]].

Other companies like [[Symbol Technologies]] and [[SocketIP]] have implemented this protocol in [[VoIP Terminal]]s (phones) and [[Media Gateway Controller]]s or [[Softswitch]]es.