Circuit group block request

A circuit group block request (CIRGRPBLKREQ) indication is delivered to the application when the ISUP layer receives a circuit group blocking message (CGB) from the far exchange. The application must consider the referenced circuits to be remotely blocked. The application must then acknowledge the circuit group blocking message by sending a circuit group blocking acknowledgment message using ISUPStatusReq.

The rangStat member of the status event (SiStaEvnt) structure is populated when CIRGRPBLKREQ indications are delivered to the application.