48-14
Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter48 Configuring Inspection for Voice and Video Protocols
MGCP Inspection
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H323 Traffic Class—Specifies the H.323 traffic class match.
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Manage—Opens the Manage H323 Class Maps dialog box to add, edit, or delete H.323 Class
Maps.
•Action—Drop packet, drop connection, or reset.
Modes
The following table shows the modes in which this feature is available:
MGCP Inspection
This section describes MGCP application inspection. This section includes the following topics:
•MGCP Inspection Overview, page48-14
•Select MGCP Map, page 48-16
•MGCP Inspect Map, page 48-16
•Gateways and Call Agents, page 48-17
•Add/Edit MGCP Policy Map, page48-18
•Add/Edit MGCP Group, page48-19

MGCP Inspection Overview

MGCP is a master/slave protocol used to control media gateways from external call control elements
called media gateway controllers or call agents. A media gateway is typically a network element that
provides conversion between the audio signals carried on telephone circuits and data packets carried over
the Internet or over other packet networks. Using NAT and PAT with MGCP lets you support a large
number of devices on an internal network with a limited set of external (global) addresses. Examples of
media gateways are:
•Trunking gateways, that interface between the telephone network and a Voice over IP network. Such
gateways typically manage a large number of digital circuits.
•Residential gateways, that provide a traditional analog (RJ11) interface to a Voice over IP network.
Examples of residential gateways include cable modem/cable set-top boxes, xDSL devices,
broad-band wireless devices.
•Business gateways, that provide a traditional digital PBX interface or an integrated soft PBX
interface to a Voice over IP network.
Note To avoid policy failure when upgrading from ASA version 7.1, all layer 7 and layer 3 policies must have
distinct names. For instance, a previously configured policy map with the same name as a previously
configured MGCP map must be changed before the upgrade.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
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