diff --git a/bsc-nat/MGCP_Adapter.ttcn b/bsc-nat/MGCP_Adapter.ttcn
index 1351997..6491c68 100644
--- a/bsc-nat/MGCP_Adapter.ttcn
+++ b/bsc-nat/MGCP_Adapter.ttcn
@@ -47,6 +47,10 @@
 	res := MGCP_CodecPort_CtrlFunct.f_IPL4_connect(MGCP_UDP, mp_mgw_ip, mp_mgw_udp_port,
 						mp_callagent_ip, mp_callagent_udp_port,
 						0, { udp:={} });
+	if (not ispresent(res.connId)) {
+		setverdict(fail, "Could not connect MGCP, check your configuration");
+		self.stop;
+	}
 	g_mgcp_conn_id := res.connId;
 
 	while (true) {