The application requests the reset of a circuit group by invoking ISUPStatusReq with the event type of CIRGRPRESREQ. The application is notified of the completion of the group reset procedure (the receipt of a group reset acknowledgment message) by receipt of a status indication (EVTSITSTAIND) with the event type of CIRGRPRESACK.
The following illustration shows a circuit group reset initiated by the application:
If the far exchange initiates the reset of the circuit group, the application receives a status indication (EVTSITSTAIND) with the event type of CIRRESREQ from the ISUP layer for each circuit in the circuit group. The application can consider these circuits reset upon receiving these indications. The ISUP task acknowledges the group reset request by sending a group reset acknowledgment message (GRA).
Note: To receive a single CIRGRPRESREQ, set the grpResetEvent parameter to TRUE in the general configuration parameters (isupInitGenCfg).
The following illustration shows a circuit group reset initiated by the far exchange: