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11-6
Cisco IOS XE Integrated Session Border Controller Configuration Guide for the Cisco ASR 1000 Series Aggregation Services Routers
OL-15421-01
Chapter 11 Quality Monitoring and Statistics Gathering
Provisioned Inactivity Timer
Related Command
The h248-media-alert-event command is used to enable or disable the Middlebox Pinhole Timer
Expired event when the DBE detects media loss.
Provisioned Inactivity Timer
The DBE can be configured with a default value for the H.248 connection’s inactivity timer value (the
it and ito properties). This default value is used if the media gateway controller (MGC) does not request
that the DBE runs an inactivity timer.
The advantage is that the DBE can detect media gateway controller (MGC) failure whether or not the
MGC has subscribed to the inactivity timer event.
The system default is that no provisioned inactivity timer is configured. The provisioned timer is started
when a successful response is received to the media gateway (MG) initial ServiceChange request to the
MGC.
The MGC subscription timer duration can override the provisioned timer duration value if the MGC
subscribes to the inactivity timer with a different timer duration than the provisioned timer duration.
However, the subscribed timer value is replaced by the provisioned timer value if the MGC cancels its
subscription or the association fails.
Related Command
The h248-inactivity-duration command configures the duration of the inactivity timer. The provisioned
duration time is zero unless the user sets the duration parameter. It returns to zero if the user configures
the no h248-inactivity-duration command.
ServiceChange Notification for Interface Status Change
This feature enables the media gateway (MG) to generate a ServiceChange H.248 notification to the
media gateway controller (MGC) containing the Termination ID of the physical interface on the data
border element (DBE) when the interface experiences status changes. This feature is described in the
“ServiceChange Notification for Interface Status Change” section on page 7-11.