diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index e06f496..21ec0ff 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -2761,8 +2761,7 @@
 runs on test_CT return charstring {
 	var charstring cmd, resp;
 	cmd := "show timeslot "&int2str(bts_nr)&" "&int2str(trx_nr)&" "&int2str(ts_nr);
-	resp := f_vty_transceive_ret(BSCVTY, cmd);
-	return regexp(resp, "*\((*)\)*", 0);
+	return f_vty_transceive_match_regexp_retry(BSCVTY, cmd, "*\((*)\)*", 0, 4, 1.0);
 }
 
 private function f_ts_dyn_mode_assert(integer bts_nr, integer trx_nr, integer ts_nr,