diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index 666c6c1..9650b3e 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -7187,6 +7187,21 @@
 	f_TC_auth_options(11);
 }
 
+friend function f_tc_lu_and_mo_csd(charstring id, BSC_ConnHdlrPars pars) runs on BSC_ConnHdlr {
+	f_init_handler(pars);
+	var CallParameters cpars := valueof(t_CallParams);
+	cpars.csd := true;
+	f_perform_lu();
+	f_mo_call(cpars);
+}
+testcase TC_lu_and_mo_csd() runs on MTC_CT {
+	var BSC_ConnHdlr vc_conn;
+	f_init();
+
+	vc_conn := f_start_handler(refers(f_tc_lu_and_mo_csd), 7);
+	vc_conn.done;
+}
+
 control {
 	execute( TC_cr_before_reset() );
 	execute( TC_lu_imsi_noauth_tmsi() );
@@ -7364,6 +7379,8 @@
 	execute( TC_auth_options_9() );
 	execute( TC_auth_options_10() );
 	execute( TC_auth_options_11() );
+
+	execute( TC_lu_and_mo_csd() );
 }