FGD and NCC API call control

When an application performs natural call control with the FGD protocol, after the application receives an NCCEVN_INCOMING_CALL event, it can invoke nccGetCallStatus to retrieve the following information within the NCC_CALL_STATUS structure:

Field

Description

calledaddr

The called number. Also referred to as the direct inward dial (DID) number.

callingaddr

The calling number (if available). Also referred to as the automatic number identification (ANI) number.


The following field is in the NCC_CAS_EXT_CALL_STATUS structure:

Field

Description

carrierid

Carrier ID information (if available).


With FGD, all digits are MFs; no DTMF signaling is used. By default, a group of incoming digits begins with a KP tone, followed by digits, then an ST tone. This may be followed by a wink, then perhaps one or more other KP-digits-ST-wink sequences.