This chapter describes telephony protocols, including the Media Gateway Control Protocol (MGCP), the Session Initiation Protocol (SIP), H.323 (H.225, H.245, RAS), the Skinny Client Control Protocol (SCCP), and TDM/analog signaling protocols.
The Skinny Client Control Protocol (SCCP) is a Cisco proprietary master/slave protocol that CallManager and other call agents can use to communicate with devices and endpoints such as Cisco IP phones. One advantage of SCCP is that it is flexible and allows features to be easily added.
SCCP uses TCP ports 2000 (SCCP) and 2443 (Secure SCCP [SCCPS]).
Call agent, device, and endpoint types that can communicate using SCCP include CallManager, CallManager ...