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In This Section: |
MGCP is a protocol for controlling telephone gateways from external call control devices called Call Agents, and Media Gateway Controllers.
MGCP is a master-slave protocol. The Call Agent is the master and the endpoints are the slaves.
Note - SIP and H.323 are peer-to-peer protocols.
With the MGCP protocol, Call Agents, synchronize with each other to send commands to the devices (Media Gateway) they control. Call Agents connect directly to IP phones. The Media Gateway or IP phones are run with commands sent by the Call Agents. The image below shows the MGCP elements and call control actions.
Media Gateway and MGCP IP phones can support features such as conference calls, 3-way brokering and supervisor inspection.
