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89-1
Cisco Unified Communications Manager Administration Guide
OL-18611-01
89
Gatekeeper Configuration
A gatekeeper device, also known as a Cisco Multimedia Conference Manager (MCM), supports the
H.225 Registration, Admission, and Status Protocol (RAS) message set that is used for call admission
control, bandwidth allocation, and dial pattern resolution (call routing). The gatekeeper provides these
services for communications between Cisco Unified Communications Manager clusters and H.323
networks. You can configure multiple gatekeeper devices per Cisco Unified Communications Manager
cluster. You can configure alternate gatekeepers for redundancy. Refer to Cisco Multimedia Conference
Manager (MCM) documentation for alternate gatekeeper configuration details.
Gatekeeper configuration comprises two components:
• Cisco Unified Communications Manager configuration. Each Cisco Unified Communications
Manager cluster can register with one or more gatekeepers. This chapter describes how to configure
the gatekeeper in Cisco Unified Communications Manager. You also need to configure trunk devices
on the Trunk Configuration window. See the
“Trunk Configuration” section on page 92-1.
• Gatekeeper configuration on the router. This type of configuration applies to a Cisco IOS
Multimedia Conference Manager (MCM) that acts as the gatekeeper. Recommended platforms for
the gatekeeper include Cisco 2600, 3600, or 7200 routers with Cisco IOS Release 12.1(3)T or
higher. Refer to the MCM documentation for information on configuring the gatekeeper. Alternate
gatekeeper configuration occurs in the MCM only, so no configuration is necessary in Cisco Unified
Communications Manager.
The following topics cover gatekeeper configuration in Cisco Unified Communications Manager
Administration:
• Gatekeeper Configuration Settings, page 89-1
• Finding a Gatekeeper, page 89-3
• Configuring a Gatekeeper, page 89-4
• Deleting a Gatekeeper, page 89-5
• Resetting a Gatekeeper, page 89-5
• Synchronizing a Gatekeeper, page 89-6
• Related Topics, page 89-6
Gatekeeper Configuration Settings
A gatekeeper device, also known as a Cisco Multimedia Conference Manager (MCM), supports the
H.225 Registration, Admission, and Status Protocol (RAS) message set that is used for call admission
control, bandwidth allocation, and dial pattern resolution (call routing). The gatekeeper provides these