Using Cisco Unified Communications Manager to Configure MGCP Gateway Support
Configuring MGCP Gateway Support
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Cisco VGD 1T3 Voice Gateway Software Configuration Guide
Any calls at the time of reregistration (even those in a transient state such as call setup) remain
undisturbed. The newly registered Cisco Unified Communications Manager determines the status of
existing calls and maintains or deletes them as appropriate.
Benefits of Cisco Unified Communications Manager Switchover and MGCP Gateway Fallback
•
Eliminates a potential single point of failure in the VoIP network by allowing you to designate up to
two backup Cisco Unified Communications Manager servers. Your MGCP voice gateways can
continue working if the primary Cisco Unified Communications Manager server fails.
•
Ensures greater stability in the voice network by preserving existing connections during a
switchover to a backup Cisco Unified Communications Manager server.
•
Prevents call-processing interruptions or dropped calls in the event of a Cisco Unified
Communications Manager or WAN failure.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
ccm-manager redundant-host {ip-address | DNS-name} [ip-address | DNS-name]
4.
ccm-manager switchback {graceful | immediate | schedule-time hh:mm | uptime-delay minutes}
5.
ccm-manager fallback-mgcp
6.
application
7.
global
8.
service {alternate {default | service-name location } | default}
9.
exit
10.
ccm-manager switchover-to-backup
Table 1
Registration Scenarios
Terminology
Connection
Registration
Gateway Connection to Primary Cisco Unified Communications Manager
Failover (also called switchover)
Gateway loses connection to
primary Cisco Unified
Communications Manager.
Gateway switches over to a
backup.
Switchback
Gateway reconnects to primary
Cisco Unified Communications
Manager.
Gateway switches back to the
primary.
Gateway connection to all Cisco Unified Communications Manager Servers
Fallback
Gateway loses connection to
primary and all backup
Cisco Unified Communications
Manager servers.
Gateway falls back to H.323
call processing.
Rehome
Gateway reconnects to one of the
Cisco Unified Communications
Manager servers.
Gateway rehomes, resuming
MGCP call processing.