diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 1c20657..47c16c2 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -451,8 +451,8 @@
 	}
 }
 
-friend function f_l1_tune(L1CTL_PT L1CTL) {
-	f_L1CTL_FBSB(L1CTL, { false, mp_trx0_arfcn }, CCCH_MODE_COMBINED, mp_rxlev_exp);
+friend function f_l1_tune(L1CTL_PT L1CTL, L1ctlCcchMode ccch_mode := CCCH_MODE_COMBINED) {
+	f_L1CTL_FBSB(L1CTL, { false, mp_trx0_arfcn }, ccch_mode, mp_rxlev_exp);
 }
 
 private function f_trxc_connect() runs on ConnHdlr {
diff --git a/bts/BTS_Tests_SMSCB.ttcn b/bts/BTS_Tests_SMSCB.ttcn
index 0712a90..c02522b 100644
--- a/bts/BTS_Tests_SMSCB.ttcn
+++ b/bts/BTS_Tests_SMSCB.ttcn
@@ -216,7 +216,7 @@
 	f_init(testcasename());
 
 	f_init_l1ctl();
-	f_l1_tune(L1CTL);
+	f_l1_tune(L1CTL, ccch_mode := CCCH_MODE_COMBINED_CBCH);
 	/* FIXME: switch to dedicated mode for SDCCH/8 */
 
 	/* send SMSCB[s] via RSL */
diff --git a/library/L1CTL_Types.ttcn b/library/L1CTL_Types.ttcn
index 69e7dbe..87849f5 100644
--- a/library/L1CTL_Types.ttcn
+++ b/library/L1CTL_Types.ttcn
@@ -62,7 +62,8 @@
 	type enumerated L1ctlCcchMode {
 		CCCH_MODE_NONE (0),
 		CCCH_MODE_NON_COMBINED,
-		CCCH_MODE_COMBINED
+		CCCH_MODE_COMBINED,
+		CCCH_MODE_COMBINED_CBCH
 	} with { variant "FIELDLENGTH(8)" };
 
 	type enumerated L1ctlNeighMode {