diff --git a/bsc-nat/MSC_ConnectionHandler.ttcn b/bsc-nat/MSC_ConnectionHandler.ttcn
index 6a9a57f..3fc11e9 100644
--- a/bsc-nat/MSC_ConnectionHandler.ttcn
+++ b/bsc-nat/MSC_ConnectionHandler.ttcn
@@ -86,9 +86,9 @@
 		[g_state == MSC_STATE_NONE] BSSAP.receive(tr_BSSMAP_ComplL3) -> value bssap {
 			/* respond with ASSIGNMENT CMD  */
 			g_state := MSC_STATE_WAIT_ASS_COMPL;
-			BSSAP.send(ts_BSSMAP_AssignmentReq(0, e1_timeslot));
+			BSSAP.send(ts_BSSMAP_AssignmentReq(ts_BSSMAP_IE_CIC(0, e1_timeslot)));
 			}
-		[g_state == MSC_STATE_WAIT_ASS_COMPL] BSSAP.receive(tr_BSSMAP_AssignmentComplete) {
+		[g_state == MSC_STATE_WAIT_ASS_COMPL] BSSAP.receive(tr_BSSMAP_AssignmentComplete(?,*)) {
 			/* FIXME: Send MGCP CRCX */
 			g_state := MSC_STATE_WAIT_CRCX_ACK;
 			var MgcpTransId trans_id := f_mgcp_alloc_tid();