Media Gateway Control Protocol
Media Gateway Control Protocol (MGCP) is another Cisco-supported protocol.
The CallManager server uses MGCP to communicate with the Cisco VG200
standalone gateway, although several other products in the Cisco product line,
including certain products in the Catalyst switching line, will support it soon.
MGCP is intended to serve as a faster protocol than H.323 and SSP, utilizing
User Datagram Protocol (UDP) as opposed to TCP for transmission. MGCP
gateways will be discussed later in this chapter.