The '''Skinny Call Control Protocol''' ('''SCCP''', or short ''Skinny'') is a proprietary network terminal control protocol originally developed by [[Selsius Systems]].
The SCCP technology is now owned and defined by [[Cisco Systems, Inc.]]. SCCP is a lightweight protocol for session signaling with [[Cisco Unified Communications Manager]] (formerly called CallManager). SCCP is used to communicate between IP devices and Cisco Unified Communications Manager. <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 [[Cisco Wireless IP Phone 7920|Cisco 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 [[MGCP]].
