freetdm: use ftdm_channel_hangup_with_cause for CAS channels (ftmod_r2)

libs/freetdm/mod_freetdm/mod_freetdm.c

@@ -493,7 +493,6 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
 	switch (chantype) {
 	case FTDM_CHAN_TYPE_FXO:
 	case FTDM_CHAN_TYPE_EM:
-	case FTDM_CHAN_TYPE_CAS:
 		{
 			ftdm_channel_call_hangup(tech_pvt->ftdmchan);
 		}
@@ -510,6 +509,7 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
 			}
 		}
 		break;
+	case FTDM_CHAN_TYPE_CAS:
 	case FTDM_CHAN_TYPE_B:
 		{
 			ftdm_call_cause_t hcause = switch_channel_get_cause_q850(channel);
@@ -521,8 +521,7 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
 		break;
 	default: 
 		{
-			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Unhandled channel type %d for channel %s\n", chantype,
-                    switch_channel_get_name(channel));
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Unhandled channel type %d for channel %s\n", chantype, switch_channel_get_name(channel));
 		}
 		break;
 	}

libs/freetdm/src/ftmod/ftmod_r2/ftmod_r2.c

@@ -307,6 +307,7 @@ static openr2_call_disconnect_cause_t ftdm_r2_ftdm_cause_to_openr2_cause(ftdm_ch
 		return OR2_CAUSE_NORMAL_CLEARING;
 
 	case FTDM_CAUSE_USER_BUSY:
+	case FTDM_CAUSE_CALL_REJECTED:
 		return OR2_CAUSE_BUSY_NUMBER;
 
 	case FTDM_CAUSE_SWITCH_CONGESTION:
@@ -334,7 +335,7 @@ static openr2_call_disconnect_cause_t ftdm_r2_ftdm_cause_to_openr2_cause(ftdm_ch
 		return OR2_CAUSE_GLARE;
 
 	}
-	ftdm_log_chan(fchan, FTDM_LOG_WARNING, "freetdm hangup cause %d mapped to openr2 cause %s\n",
+	ftdm_log_chan(fchan, FTDM_LOG_NOTICE, "freetdm hangup cause %d mapped to openr2 cause %s\n",
 			fchan->caller_data.hangup_cause, openr2_proto_get_disconnect_string(OR2_CAUSE_UNSPECIFIED));
 	return OR2_CAUSE_UNSPECIFIED;
 }