MSC_ConnectionHandler: expect additional MDCX when call is LCLS

The function f_establish_f_establish_fully does not yet handle the
case where calls get switched locally. In those cases we expect to
see one additional MDCX before the BSSMAP ASSIGNMENT COMPLETE is
sent.

- Check exp_ass_cpl if the call is expected to be LCLS and expect
  another MDCX for those cases.

Change-Id: I55fae5ab03980cd810ed7dc38208550686b1659e
Related: OS#3292

bsc/MSC_ConnectionHandler.ttcn

@@ -947,6 +947,18 @@ runs on MSC_ConnHdlr {
 		self.stop;
 	}
 
+	/* When the BSC detects that LCLS is possible it will cross the
+	 * connetions that point to the PBX side of the MGW. In our case this
+	 * is mgcp_conn[1]. The BSC performs this operation already before the
+	 * assignment complete is generated. This means we expect another MDCX
+	 * at mgcp_conn[1] when LCLS is expected. */
+	if (ispresent(exp_ass_cpl.pdu.bssmap.assignmentComplete.lCLS_BSS_Status.lCLS_BSS_StatusValue)) {
+		if (valueof(exp_ass_cpl.pdu.bssmap.assignmentComplete.lCLS_BSS_Status.lCLS_BSS_StatusValue) == LCLS_STS_locally_switched) {
+			g_media.mgcp_conn[1].mdcx_seen_exp := g_media.mgcp_conn[1].mdcx_seen_exp + 1;
+
+		}
+	}
+
 	f_check_mgcp_expectations();
 }