Skinny Client Control Protocol: Difference between revisions

Revision as of 16:45, 10 July 2015

Revision as of 16:47, 10 July 2015

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The '''Skinny Client Control Protocol''' ('''SCCP''') is a proprietary network terminal control protocol originally developed by [[Selsius Systems]], which was acquired by [[Cisco Systems]] in 1998.

SCCP is a lightweight IP-based protocol for session signaling with [[Cisco Unified Communications Manager]], formerly named ''CallManager''.<ref> [http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/a08procl.pdf Understanding IP Telephony Protocols] </ref><ref>[http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080624977.shtml Call states sent to SCCP endpoints by Cisco CallManager]</ref> Examples of SCCP clients include the Cisco 7900 series of IP phones, Cisco IP Communicator softphone and the [[802.11b]] wireless Wireless IP Phone 7920, along with Cisco Unity voicemail server. CallManager acts as a signaling proxy for call events initiated over other common protocols such as [[H.323]], [[Session Initiation Protocol]] (SIP), [[ISDN]] and/or [[Media Gateway Control Protocol|MGCP]].

==Protocol components==

An SCCP client uses [[TCP/IP]] to communicate with one or more Call Manager applications in a cluster. It uses the [[Real-time Transport Protocol]] (RTP) over [[User Datagram Protocol|UDP]]-transport for the bearer traffic (real-time audio stream) with other '''Skinny''' clients or an H.323 terminal. 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.

Some Cisco analog media gateways, such as the VG248 gateway, register and communicate with [[CallManager|Cisco Unified Communications Manager]] using SCCP.

==Origin==