diff --git a/include/osmocom/msc/iucs.h b/include/osmocom/msc/iucs.h
index a48a316..8b22104 100644
--- a/include/osmocom/msc/iucs.h
+++ b/include/osmocom/msc/iucs.h
@@ -8,3 +8,5 @@
 struct gsm_subscriber_connection *subscr_conn_lookup_iu(struct gsm_network *network,
 							struct ranap_ue_conn_ctx *ue);
 int iu_rab_act_cs(struct gsm_trans *trans);
+
+uint32_t iu_get_conn_id(const struct ranap_ue_conn_ctx *ue);
diff --git a/src/libmsc/iu_dummy.c b/src/libmsc/iu_dummy.c
index 4191c5a..bb53367 100644
--- a/src/libmsc/iu_dummy.c
+++ b/src/libmsc/iu_dummy.c
@@ -90,4 +90,10 @@
 	return 0;
 }
 
+uint32_t iu_get_conn_id(const struct ranap_ue_conn_ctx *ue)
+{
+	LOGP(DLGLOBAL, LOGL_INFO, "iu_get_conn_id() dummy called, returning BOGUS value\n");
+	return 23;
+}
+
 #endif
diff --git a/src/libmsc/iucs.c b/src/libmsc/iucs.c
index 7bb45b2..d6da1f7 100644
--- a/src/libmsc/iucs.c
+++ b/src/libmsc/iucs.c
@@ -251,3 +251,7 @@
 	return 0;
 }
 
+uint32_t iu_get_conn_id(const struct ranap_ue_conn_ctx *ue)
+{
+	return ue->conn_id;
+}