freetdm: change call reference number to HEX string format

libs/freetdm/mod_freetdm/mod_freetdm.c

@@ -1770,7 +1770,11 @@ ftdm_status_t ftdm_channel_from_event(ftdm_sigmsg_t *sigmsg, switch_core_session
 
 		switch_channel_set_variable_printf(channel, "sip_h_X-FreeTDM-Screen", "%d", channel_caller_data->screen);
 		switch_channel_set_variable_printf(channel, "sip_h_X-FreeTDM-Presentation", "%d", channel_caller_data->pres);
-		switch_channel_set_variable_printf(channel, "sip_h_X-FreeTDM-CallReference", "%d", channel_caller_data->call_reference);
+
+		var_value = ftdm_sigmsg_get_var(sigmsg, "ss7_callref");
+		if (!ftdm_strlen_zero(var_value)) {
+			switch_channel_set_variable_printf(channel, "sip_h_X-FreeTDM-CallReference", "%s", var_value);
+		}
 
 		var_value = ftdm_sigmsg_get_var(sigmsg, "ss7_opc");
 		if (!ftdm_strlen_zero(var_value)) {

libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c

@@ -252,10 +252,9 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
 			sngss7_add_var(sngss7_info, "ss7_opc", var);
 			
 			if (siConEvnt->callRef.callId.pres) {
-				ftdmchan->caller_data.call_reference = (unsigned int)siConEvnt->callRef.callId.val;
-			} else {
-				ftdmchan->caller_data.call_reference = 0;
-			}
+				sprintf(var, "%x", siConEvnt->callRef.callId.val);
+				sngss7_add_var(sngss7_info, "ss7_callref", var);
+			} 
 			
 			if (sngss7_info->circuit->transparent_iam) {
 				sngss7_save_iam(ftdmchan, siConEvnt);