diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 7c6886d..1232a6c 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -4701,7 +4701,9 @@
 	f_TC_pcu_act_req(0, 0, 7, true);
 
 	/* Tune trxcon to that PDCH channel */
-	L1CTL.send(ts_L1CTL_DM_EST_REQ_H0(ts_RslChanNr_PDCH(7), 7, mp_trx0_arfcn));
+	var ConnHdlrPars pars := valueof(t_Pars(ts_RslChanNr_PDCH(7), ts_RSL_ChanMode_SIGN));
+	f_resolve_fh_params(pars);
+	f_l1ctl_est_dchan(L1CTL, pars);
 
 	/* Verify PTCCH/U: send several access bursts, make sure they're received */
 	for (var integer i := 0; i < 16; i := i + 1) {
@@ -4962,7 +4964,9 @@
 	f_TC_pcu_act_req(0, 0, 7, true);
 
 	/* Tune trxcon to that PDCH channel on TS7 */
-	L1CTL.send(ts_L1CTL_DM_EST_REQ_H0(ts_RslChanNr_PDCH(7), 7, mp_trx0_arfcn));
+	var ConnHdlrPars pars := valueof(t_Pars(ts_RslChanNr_PDCH(7), ts_RSL_ChanMode_SIGN));
+	f_resolve_fh_params(pars);
+	f_l1ctl_est_dchan(L1CTL, pars);
 
 	/* C/I in centiBels, test range: -256 .. +1280, step 128 */
 	for (var int16_t i := -256; i <= 1280; i := i + 128) {