1.11. Alarm Handling

As described in the GlobalCall API Software Reference, the GCEV_BLOCKED and GCEV_UNBLOCKED events indicate that an alarm condition has occurred or has been cleared, respectively. These events are generated on every opened line device associated with the trunk on which the alarm occurs, if the event is enabled. These events are enabled by default. The application may disable and enable the events by using the gc_SetEvtMsk( ) function.

When enabling or disabling these events from the board using ISDN, setting the event mask on any line device that represents a time slot will result in setting the mask to the same value on all time slot level line devices on the same trunk. Additionally, setting the event mask on a line device that represents the board will have the same effect (that is, it will set the mask for all time slot level line devices on that trunk).

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