Add more information, this is my code: case IPMEV_GET_XMITTS_INFO: traceLog("[%s] IPMEV_GET_XMITTS_INFO\n", timeNow); int nEventType = sr_getevttype(); int nDeviceID = sr_getevtdev(); void* pVoid = sr_getevtdatap(); SC_TSINFO* pTimeSlotInfo; int index_voice2 = voice[index_voice].bridge_index; pTimeSlotInfo = (SC_TSINFO*)pVoid; traceLog("[%s] Received IPMEV_GET_XMITTS_INFO for device = %s\n", timeNow, ATDV_NAMEP(nDeviceID)); traceLog("[%s] Timeslot number %d\n", timeNow, *(pTimeSlotInfo- sc_tsarrayp)); if ( ipm_Listen(voice[index_voice2].deviceInfo[IPM].devH, pTimeSlotInfo, EV_SYNC) 0 ) { traceLog("[%s] ipm_Listen(%s) failed %d-%s\n", timeNow, voice[index_voice2].deviceInfo[IPM].device_name, ATDV_LASTERR(voice[index_voice2].deviceInfo[IPM].devH), ATDV_ERRMSGP(voice[index_voice2].deviceInfo[IPM].devH)); } else { traceLog("[%s] ipm_Listen success %s\n", timeNow, voice[index_voice2].deviceInfo[IPM].device_name); } I wonder why my program don't received event IPMEV_LISTEN or IPMEV_ERROR after ipm_Listen success :(
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