diff --git a/bts/BTS_Tests_OML.ttcn b/bts/BTS_Tests_OML.ttcn
index cf88931..980643a 100644
--- a/bts/BTS_Tests_OML.ttcn
+++ b/bts/BTS_Tests_OML.ttcn
@@ -675,14 +675,15 @@
 	f_shutdown_helper();
 }
 
-/* Make sure that the IUT sends RSL Connect NACK when the remote is not reachable. */
+/* Make sure that the IUT sends RSL Connect NACK when configuring unexistent TRX NR */
 testcase TC_ipa_rsl_connect_nack() runs on BSC_OML_CT {
 	timer T := 2.0;
+	/* Unconfigured TRX: */
+	template (value) OML_FOM_ObjectInstance obj_inst := ts_OML_ObjectInstance(0, 200, 255);
 
 	f_init_oml(testcasename());
 
-	/* Most likely, nobody is listening to this port */
-	OML.send(ts_OML_IPA_RslConnect(0, 65535));
+	OML.send(ts_OML_IPA_RslConnect(obj_inst, 0, 65535));
 
 	T.start;
 	alt {
@@ -811,9 +812,11 @@
 	execute( TC_ts_opstart() );
 	execute( TC_ts_opstart_noattr() );
 	execute( TC_initial_state_reports() );
-	execute( TC_ipa_rsl_connect_nack() );
 
 	execute( TC_ipa_osmo_pcu_anr_fwd() );
+
+	/* This one makes osmo-bts <= 1.6.0 crash, keep it at the end: */
+	execute( TC_ipa_rsl_connect_nack() );
 }
 
 /* BTS:
diff --git a/library/AbisOML_Types.ttcn b/library/AbisOML_Types.ttcn
index ae39671..99ad252 100644
--- a/library/AbisOML_Types.ttcn
+++ b/library/AbisOML_Types.ttcn
@@ -1249,13 +1249,17 @@
 
 
 
-template (value) OML_PDU ts_OML_IPA_RslConnect(uint8_t stream_id, uint16_t port_nr) :=
-	ts_OML_IPA_MsgType(NM_MT_IPACC_RSL_CONNECT, NM_OC_BASEB_TRANSC, ts_OML_ObjectInstance(0,0,255), {
+template (value) OML_PDU ts_OML_IPA_RslConnect(template (value) OML_FOM_ObjectInstance obj_inst,
+					       template (value) uint8_t stream_id,
+					       template (value) uint16_t port_nr) :=
+	ts_OML_IPA_MsgType(NM_MT_IPACC_RSL_CONNECT, NM_OC_BASEB_TRANSC, obj_inst, {
 			   ts_OML_IE(NM_ATT_IPACC_STREAM_ID, OML_FOM_IE_Body:{stream_id := stream_id}),
 			   ts_OML_IE(NM_ATT_IPACC_DST_IP_PORT, OML_FOM_IE_Body:{portnr := port_nr})
 			   });
-template OML_PDU tr_OML_IPA_RslConnect(template uint8_t stream_id, template uint16_t port_nr) :=
-	tr_OML_IPA_MsgType(NM_MT_IPACC_RSL_CONNECT, NM_OC_BASEB_TRANSC, tr_OML_ObjectInstance(0,0,255), {
+template OML_PDU tr_OML_IPA_RslConnect(template (present) OML_FOM_ObjectInstance obj_inst,
+				       template (present) uint8_t stream_id,
+				       template (present) uint16_t port_nr) :=
+	tr_OML_IPA_MsgType(NM_MT_IPACC_RSL_CONNECT, NM_OC_BASEB_TRANSC, obj_inst, {
 			   tr_OML_IE(NM_ATT_IPACC_STREAM_ID, OML_FOM_IE_Body:{stream_id := stream_id}),
 			   tr_OML_IE(NM_ATT_IPACC_DST_IP_PORT, OML_FOM_IE_Body:{portnr := port_nr})
 			   });