diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index 9650b3e..22b308e 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -7202,6 +7202,21 @@
 	vc_conn.done;
 }
 
+friend function f_tc_lu_and_mt_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_mt_call(cpars);
+}
+testcase TC_lu_and_mt_csd() runs on MTC_CT {
+	var BSC_ConnHdlr vc_conn;
+	f_init();
+
+	vc_conn := f_start_handler(refers(f_tc_lu_and_mt_csd), 7);
+	vc_conn.done;
+}
+
 control {
 	execute( TC_cr_before_reset() );
 	execute( TC_lu_imsi_noauth_tmsi() );
@@ -7381,6 +7396,7 @@
 	execute( TC_auth_options_11() );
 
 	execute( TC_lu_and_mo_csd() );
+	execute( TC_lu_and_mt_csd() );
 }