MGCP Architecture
The broadcast arrangement is composed of a Alarm Abettor (or Media Aperture Controller), at
least one Media Aperture (MG) that performs the about-face of media signals between
circuits and packets, and at atomic one Signaling Aperture (SG) back affiliated to the
PSTN.
MGCP defines a cardinal of apparatus and concepts. You charge accept the relationships
between apparatus and how the apparatus use the concepts to apparatus a
working MGCP environment.
Following are the apparatus that are acclimated in an MGCP environment:
■ Endpoints: Represent the point of alternation amid a packet arrangement and a
traditional blast network.
■ Gateways: Handle the adaptation of audio amid a SCN and a packet network.
The media aperture uses MGCP to address contest (such as off-hook or dialed digits)
to a alarm agent.
■ Alarm Agent: Exercises ascendancy over the operation of a gateway. The alarm abettor uses
MGCP to acquaint the gateway
■ What contest should be appear to the alarm agent
■ How endpoints should be connected
■ What signals should be implemented on endpoints
MGCP additionally allows the alarm abettor to analysis the accepted accompaniment of endpoints on a gateway.
Figure 5-16 shows an MGCP ambiance with all three components.
Trunking Gateway:
• Connecting PSTN Bearer
Channels to an IP Network
FXS
PRI PRI
TGW
Cisco Unified
Communications
Manager
Cisco Voice
Gateway
Cisco articulation gateways can act as MGCP gateways, and Cisco Unified Communications
Manager acts as an MGCP alarm agent.