diff --git a/bsc/MSC_ConnectionHandler.ttcn b/bsc/MSC_ConnectionHandler.ttcn
index f763994..d619068 100644
--- a/bsc/MSC_ConnectionHandler.ttcn
+++ b/bsc/MSC_ConnectionHandler.ttcn
@@ -164,6 +164,7 @@
 		endpoint := omit,
 		transid := omit
 	};
+	var SDP_Message sdp;
 
 	mgcp_conn_id := f_mgcp_alloc_conn_id();
 	f_create_chan_and_exp(pars);
@@ -172,10 +173,13 @@
 	BSSAP.receive(tr_BSSMAP_ComplL3);
 	f_create_mgcp_expect(mgcpcrit);
 	BSSAP.send(ass_cmd);
+	MGCP.receive(tr_CRCX) -> value cmd;
+	sdp := valueof(ts_SDP("127.0.0.1", "127.0.0.1", "foo", "21", 1000, { "98" },
+		{valueof(ts_SDP_rtpmap(98, "AMR/8000")),
+		valueof(ts_SDP_ptime(20)) } ));
+	MGCP.send(ts_CRCX_ACK(cmd.line.trans_id, mgcp_conn_id, sdp))
+
 	alt {
-	[] MGCP.receive(tr_CRCX) -> value cmd {
-		MGCP.send(ts_CRCX_ACK(cmd.line.trans_id, mgcp_conn_id, cmd.sdp))
-		}
 	/* if we receive exactly what we expected, always return + pass */
 	[] BSSAP.receive(exp_ass_cpl) -> value bssap {
 		setverdict(pass);