Restrictions For Configuring Mgcp Gateway Support; Information About Mgcp Gateway Support; Cisco Unified Communications Manager - Cisco VGD-1T3 Software Configuration Manual

Restrictions for Configuring MGCP Gateway Support

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Cisco Unified Communications Manager

The following prequesities pertain specifically to RSVP Agent in a Cisco Unified Communications
Manager network:
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Restrictions for Configuring MGCP Gateway Support
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Any configuration update that affects MGCP should be performed during a planned maintenance
Note
window while MGCP is disabled; otherwise, updating the configuration could disrupt MGCP
functionality. Before making any configuration changes, disable MGCP using the no mgcp command.
After all configuration changes are completed, use the mgcp command to enable MGCP.

Information About MGCP Gateway Support

MGCP enables the remote control and management of voice and data communications devices at the
edge of multiservice IP packet networks. Because of its centralized architecture, MGCP overcomes the
distributed configuration and administration problems inherent in the use of protocols such as H.323.
MGCP simplifies the configuration and administration of voice gateways and supports multiple
(redundant) call agents, eliminating the potential for a single point of failure in controlling the Cisco IOS
gateway in the network.
MGCP can be configured as a master or slave protocol to ensure that the gateway receives and executes
the configuration, control, and management commands that are issued by Cisco Unified
Communications Manager. The MGCP gateway is under the control of Cisco Unified Communications
Manager.
Cisco VGD 1T3 Voice Gateway Software Configuration Guide
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The sccp ccm command must use the keyword version 6.1.2 or version 7.0.3.
Cisco Unified Communications Manager 6.1.2, 7.0.3, or a later release.
Transcoder and MTP services must be configured in Cisco Unified Communications Manager. See
the following chapters in the Cisco Unified Communications Manager Administration Guide:
– "Media Termination Point Configuration"
– "Transcoder Configuration"
Support for adding the Cisco VGD 1T3 as a Cisco Unified Communications Manager controlled
MGCP gateway requires Cisco Unified Communications Manager version 6.1(2), 7.0(3), or later.
Only one Cisco VGD 1T3 gateway is supported per Cisco Unified Communications Manager
subscriber node.
Integrated access is not supported when you control voice traffic using MGCP and Cisco Unified
Communications Manager. Integrated access is when the channels on a T1 interface are divided
between a group used for voice and another group used for WAN access.
T1 protocols, such as QSIG T1 FGD, and PRI NFAS, are not supported with MGCP.
Using Cisco Unified Communications Manager to Configure MGCP Gateway Support