diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index a9e464a..8a3b101 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -1829,7 +1829,9 @@
  * Measurement Processing / Reporting
  ***********************************************************************/
 
-private template LapdmAddressField ts_LapdmAddr(LapdmSapi sapi, boolean c_r) := {
+private template (value) LapdmAddressField
+ts_LapdmAddr(template (value) LapdmSapi sapi,
+	     template (value) boolean c_r) := {
 	spare := '0'B,
 	lpd := 0,
 	sapi := sapi,
@@ -1837,22 +1839,28 @@
 	ea := true
 }
 
-private template LapdmFrameAB ts_LAPDm_AB(LapdmSapi sapi, boolean c_r, boolean p, octetstring pl) := {
+private template (value) LapdmFrameAB
+ts_LAPDm_AB(template (value) LapdmSapi sapi,
+	    template (value) GsmRrL3Message l3,
+	    template (value) boolean c_r := false,
+	    template (value) boolean p := false) := {
 	addr := ts_LapdmAddr(sapi, c_r),
-	ctrl := ts_LapdmCtrlUI(p),
+	ctrl := ts_LapdmCtrlUI(valueof(p)),
 	len := 0, /* overwritten */
 	m := false,
 	el := 1,
-	payload := pl
+	payload := enc_GsmRrL3Message(valueof(l3))
 }
 
 /* handle incoming downlink SACCH and respond with uplink SACCH (meas res) */
 private altstep as_l1_sacch() runs on ConnHdlr {
+	var template (value) LapdmFrameAB lb;
 	var L1ctlDlMessage l1_dl;
+
 	[] L1CTL.receive(tr_L1CTL_DATA_IND(g_chan_nr, tr_RslLinkID_SACCH(?))) -> value l1_dl {
 		log("SACCH received: ", l1_dl.payload.data_ind.payload);
-		var GsmRrL3Message meas_rep := valueof(ts_MEAS_REP(true, mp_rxlev_exp, mp_rxlev_exp));
-		var LapdmFrameAB lb := valueof(ts_LAPDm_AB(0, false, false, enc_GsmRrL3Message(meas_rep)));
+
+		lb := ts_LAPDm_AB(0, ts_MEAS_REP(true, mp_rxlev_exp, mp_rxlev_exp));
 		log("LAPDm: ", lb);
 
 		var template (value) SacchL1Header l1h := ts_SacchL1Header(
@@ -1860,7 +1868,7 @@
 			g_pars.l1_pars.ms_actual_ta);
 
 		/* TODO: we can use an extension of TTCN-3 for that, i.e. PADDING('2B'O) */
-		var octetstring l2 := f_pad_oct(enc_LapdmFrameAB(lb), 21, '2B'O);
+		var octetstring l2 := f_pad_oct(enc_LapdmFrameAB(valueof(lb)), 21, '2B'O);
 
 		log("Sending Measurement Report: ", l1h, l2);
 		L1CTL.send(ts_L1CTL_DATA_REQ_SACCH(g_chan_nr, ts_RslLinkID_SACCH(0), l1h, l2));