Sunday 15 January 2012

H323,SIP,MGCP,SCCP

H.323:a big packet which allows simultaneous voice,video and data to transmit across ISDN connections.(peer-to-peer architecture)
SIP:Session Initiation Protocol,the next generation of H.323. It supports all of these protocols which H323 does, but it's primary functionality is setting up the session, it does not contain all of the packets which H323 has. It passes off the responsibility of the voice or video call to other protocols. It's a much more light-weight and scalable protocol than H323.(peer-to-peer)
MGCP:Media Gateway Control Protocol, the first true"client/server" VOIP signalling protocol. it reports every action to CUCM.
SCCP: Skinny Client Control Protocol, cisco-proprietary. it's not specifically designed for gateway signaling and control. the primary goal of SCCP is to provide a signalling protocol between CUCM and Cisco IP phones.(client/server)

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