diff --git a/openbsc/src/nat/bsc_nat_utils.c b/openbsc/src/nat/bsc_nat_utils.c
index 616e52f..966eb3a 100644
--- a/openbsc/src/nat/bsc_nat_utils.c
+++ b/openbsc/src/nat/bsc_nat_utils.c
@@ -389,3 +389,16 @@
 		regcomp(reg, argv[0], 0);
 	}
 }
+
+static const char *con_types [] = {
+	[NAT_CON_TYPE_NONE] = "n/a",
+	[NAT_CON_TYPE_LU] = "Location Update",
+	[NAT_CON_TYPE_CM_SERV_REQ] = "CM Serv Req",
+	[NAT_CON_TYPE_PAG_RESP] = "Paging Response",
+	[NAT_CON_TYPE_OTHER] = "Other",
+};
+
+const char *bsc_con_type_to_string(int type)
+{
+	return con_types[type];
+}
\ No newline at end of file