diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index f99d46b..fc221f2 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -2054,7 +2054,7 @@
 		/* Setup a BSSAP connection and clear it right away. This is
 		 * the MSC telling the BSC about a planned release, it's not an
 		 * erratic loss of a connection. */
-		dt := f_est_dchan('23'O, 23, '00010203040506'O);
+		dt := f_est_dchan(int2oct(i,1), 23+i, '00010203040506'O);
 
 		/* MSC disconnects (RLSD). */
 		BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
@@ -2099,7 +2099,7 @@
 		/* Setup a BSSAP connection and clear it right away. This is
 		 * the MSC telling the BSC about a planned release, it's not an
 		 * erratic loss of a connection. */
-		dt := f_est_dchan('23'O, 23, '00010203040506'O);
+		dt := f_est_dchan(int2oct(i,1), 23+i, '00010203040506'O);
 
 		/* Instruct BSC to clear channel */
 		BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));