The call admission control feature allows you to count and limit
the number of calls for a certain location. This can only be performed for
server group elements.
When call admission control is enabled, the system monitors the
start and stop time for each call. You can also set the session timeout which
tells the system how long to wait before a call is considered dead.
For call admission control to work correctly, record route needs
to be enabled on Cisco Unified SIP Proxy. If record route is not enabled, call
admission control will not work reliably.
Configure > Call Admission Control.
The system displays the Call Admission Control page.
Select if you want to enable or disable Call Admission Control.
Enter the Call Admission Control session timeout in minutes.
If call admission control is enabled and you change the
configuration value, the system only uses the updated value for new calls. Any
existing calls will continue to use the session timeout value that was
configured when those calls were originally set up. Changing the session
timeout has no effect on the timeout for existing, active calls.