One or more MTP stop congestion (MTPSTOPCONGEST) indications are delivered to the application when the ISUP layer receives a stop congestion indication from the MTP 3 layer. The rangStat member of the status event structure (SiStaEvnt) is populated when MTPSTOPCONGEST indications are delivered to the application.
The range value indicates the number of affected circuits minus one. The circuit member of the IsupRcvInfoBlk indicates the first affected circuit.