diff --git a/ttcn3-bsc-test/BSC_Tests.cfg b/ttcn3-bsc-test/BSC_Tests.cfg
index 29cca8c1..5f29a273 100644
--- a/ttcn3-bsc-test/BSC_Tests.cfg
+++ b/ttcn3-bsc-test/BSC_Tests.cfg
@@ -12,6 +12,7 @@
 BSC_Tests.mp_bsc_ip   := "172.18.2.20";
 BSC_Tests.mp_test_ip   := "172.18.2.203";
 BSC_Tests.mp_bssap_cfg := {
+	transport := BSSAP_TRANSPORT_AoIP,
 	sccp_service_type := "mtp3_itu",
 	sctp_addr := { 23905, "172.18.2.203", 2905, "172.18.2.200" },
 	own_pc := 185,
diff --git a/ttcn3-msc-test/MSC_Tests.cfg b/ttcn3-msc-test/MSC_Tests.cfg
index 72fc1c63..2ce2b8c0 100644
--- a/ttcn3-msc-test/MSC_Tests.cfg
+++ b/ttcn3-msc-test/MSC_Tests.cfg
@@ -11,6 +11,7 @@
 # connection to STP
 MSC_Tests.mp_bssap_cfg := {
 	{
+		transport := BSSAP_TRANSPORT_AoIP,
 		sccp_service_type := "mtp3_itu",
 		sctp_addr := { 23906, "172.18.1.103", 2905, "172.18.1.200" },
 		own_pc := 193,	/* 0.24.1 */
@@ -21,6 +22,7 @@ MSC_Tests.mp_bssap_cfg := {
 		rctx := 0
 	},
 	{
+		transport := BSSAP_TRANSPORT_AoIP,
 		sccp_service_type := "mtp3_itu",
 		sctp_addr := { 23907, "172.18.1.103", 2905, "172.18.1.200" },
 		own_pc := 194,	/* 0.24.2 */