Fix for not handling T302 timeout in NET mode

libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_hndl.c

@@ -953,6 +953,12 @@ void sngisdn_process_sta_cfm (sngisdn_event_data_t *sngisdn_event)
 				break;
 				case 2: /* overlap sending */
 					switch (ftdmchan->state) {
+						case FTDM_CHANNEL_STATE_COLLECT:
+							/* T302 Timeout reached */
+							/* Send the call to user, and see if they accept it */
+							ftdm_log_chan_msg(ftdmchan, FTDM_LOG_DEBUG, "T302 Timer expired, proceeding with call\n");
+							ftdm_set_state(ftdmchan, FTDM_CHANNEL_STATE_RING);
+							break;
 						case FTDM_CHANNEL_STATE_PROCEED:
 						case FTDM_CHANNEL_STATE_PROGRESS:
 						case FTDM_CHANNEL_STATE_RINGING: