MGCP
The MGCP protocol is based on a client/server architecture. That simplifies the configuration
because the dial plan and route patterns are defined directly on a Cisco UCM
server within a cluster. Examples of MGCP-capable devices are the Cisco VG224 Analog
Phone Gateway and the Cisco 2600XM Series, 2800 Series, 3700 Series, and 3800 Series
routers. Non-IOS MGCP gateways include the Cisco Catalyst 6608-E1 and Catalyst
6608-T1 module.
MGCP is used to manage a gateway. All ISDN Layer 3 information is backhauled to a
Cisco UCM server. Only the ISDN Layer 2 information (Q.921) is terminated on the gateway,
as depicted in Figure 1-3.
PSTN
MGCP
V
Q.921
Q.931
Figure 1-3 MGCP Signaling