4.2.3.3 UM Group Failover
Description
Each UM group can be assigned a failover destination. If a call is routed to a UM group that is unavailable, the
call will be redirected to the specified UM group.
UM group failover applies to incoming trunk calls (including DISA), intercom calls, and faxes.
Conditions
• If a call cannot be routed to a UM group and no failover UM group is specified, the system handles the call
according to Intercept Routing—No Destination (® 2.1.1.7 Intercept Routing—No Destination).
• Failover redirection does not cascade; if the failover destination is unavailable, the call will not be redirected
to that UM group’s failover destination.
• The same UM group may be specified as the failover destination for multiple UM groups. For example, UM
group 3 can be the failover destination for both UM group 1 and UM group 2.
PC Programming Manual References
11.7.2 PBX Configuration—[3-7-2] Group—UM Group—Unit Settings—
Fail Over Site Name
Feature Guide 355
4.2.3 One-look Networking Survivability
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