bsc: as_mgcp_ack_all_dlcx: support sccplite

Fix the "Unexpected DLCX received" error in TC_assignment_csd with
sccplite. Without the patch, f_perform_clear() does not catch the DLCX
for sccplite.

Related: OS#4393
Change-Id: I9a3a4407510143af4bbc77a8cfe51a137945b716
---
M bsc/BSC_Tests.ttcn
1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 878083e..5e739b2 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -8466,10 +8466,22 @@
 
 private altstep as_mgcp_ack_all_dlcx() runs on MSC_ConnHdlr {
 	var MgcpCommand mgcp_cmd;
-	[] MGCP.receive(tr_DLCX(?)) -> value mgcp_cmd {
+	var template MgcpMessage msg_dlcx := {
+		command := tr_DLCX
+	}
+	var MGCP_RecvFrom mrf;
+
+	[g_pars.aoip] MGCP.receive(tr_DLCX(?)) -> value mgcp_cmd {
 		MGCP.send(ts_DLCX_ACK2(mgcp_cmd.line.trans_id));
 		repeat;
 	}
+
+	[not g_pars.aoip] MGCP_MULTI.receive(tr_MGCP_RecvFrom_any(msg_dlcx)) -> value mrf {
+		MGCP_MULTI.send(t_MGCP_SendToMrf(mrf, MgcpMessage:{
+			response := ts_DLCX_ACK2(mrf.msg.command.line.trans_id)
+		}));
+		repeat;
+	}
 }
 
 private altstep as_rsl_ack_all_rel_req() runs on MSC_ConnHdlr {

