3.3.2 Call State Event Configuration

Some call state transition events can be masked so that the events are not generated. Although an event may be masked, the corresponding call state transition can still take place. This configuration can be done by issuing the gc_SetConfigData( ) function with a target_type of GCTGT_GCLIB_CHAN and a target_ID of a line device, and passing the appropriate set ID and parm IDs. The set ID used in this context is GCSET_CALLEVENT_MSK and the relevant parm IDs are:

GCACT_ADDMSK

Enable the notification of events specified in the value in addition to previously enabled events.

GCACT_SUBMSK

Disable notification of the events specified in the value.

GCACT_SETMSK

Enable the notification of events specified in the value and disables notification of any event not specified.

The GCACT_ADDMSK, GCACT_SUBMSK and GCACT_SETMSK parm IDs can be assigned one of the following values (of type GC_VALUE_LONG), or an ORed combination of the values:

• GCMSK_ALERTING
• GCMSK_DETECTED
• GCMSK_DIALING
• GCMSK_PROCEEDING
• GCMSK_REQMOREINFO

Note: Using the gc_SetConfigData( ) function with a target_ID of a board device to mask events for all devices associated with a board is not supported. Call state events can be masked on a per line device basis only.

See the Global Call API Library Reference for more information on the gc_SetConfigData( ) function.

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