- Replaces SGCP, open standard but primarily developed by Cisco
- plain-text protocol, UDP port 2427 (receive) port 2727 (send)
- uses a slave/master control model
- Supports a centralized dial-plan on CUCM
- Supports QSIG for working with PBX systems
- Most of the configuration is on call agent (server) rather than the gateway
- Needs a backup basic configuration (h.232/SIP) on the device to function when the connection to the call agent is lost.
- Cached copy of dial-plan is stored on the voice gateway to match dialed digits
- Voice Interfaces on the gateway register individually with the call agent
MGCP Call Flow
- Notification Request (RQNT) - request from call agent to gateway to monitor the port
- Notify (NTFY) - gateway notifies call agent when number dialed on port
- Create Connection (CRCX)
- Modify Connection (MDCX)
- Delete Connection (DLCX)
Gateway Configuration
ccm-manager mgcp
mgcp
mgcp call-agent 10.0.1.10 service-type mgcp
dial-peer voice 1 pots
port 1/0/0
service MGCPAPP
!! Older IOS versions use application instead of service
controller t1 1/0
dso-group 1 timeslots 1-24 type none service mgcp
