diff --git a/openbsc/include/openbsc/ipaccess.h b/openbsc/include/openbsc/ipaccess.h
index 3956877..21a5c17 100644
--- a/openbsc/include/openbsc/ipaccess.h
+++ b/openbsc/include/openbsc/ipaccess.h
@@ -3,6 +3,9 @@
 
 #include "e1_input.h"
 
+#define IPA_TCP_PORT_OML	3002
+#define IPA_TCP_PORT_RSL	3003
+
 struct ipaccess_head {
 	u_int16_t len;	/* network byte order */
 	u_int8_t proto;
diff --git a/openbsc/src/input/ipaccess.c b/openbsc/src/input/ipaccess.c
index 6bd501d..bbfb091 100644
--- a/openbsc/src/input/ipaccess.c
+++ b/openbsc/src/input/ipaccess.c
@@ -657,12 +657,12 @@
 	e1h->gsmnet = gsmnet;
 
 	/* Listen for OML connections */
-	ret = make_sock(&e1h->listen_fd, 3002, listen_fd_cb);
+	ret = make_sock(&e1h->listen_fd, IPA_TCP_PORT_OML, listen_fd_cb);
 	if (ret < 0)
 		return ret;
 
 	/* Listen for RSL connections */
-	ret = make_sock(&e1h->rsl_listen_fd, 3003, rsl_listen_fd_cb);
+	ret = make_sock(&e1h->rsl_listen_fd, IPA_TCP_PORT_RSL, rsl_listen_fd_cb);
 
 	return ret;
 }
diff --git a/openbsc/src/ipaccess-proxy.c b/openbsc/src/ipaccess-proxy.c
index 00b6340..6e0ce6a 100644
--- a/openbsc/src/ipaccess-proxy.c
+++ b/openbsc/src/ipaccess-proxy.c
@@ -464,7 +464,7 @@
 	memcpy(ipbc->id_resp, msg->data, ipbc->id_resp_len);
 
 	/* Create OML TCP connection towards BSC */
-	sin.sin_port = htons(3002);
+	sin.sin_port = htons(IPA_TCP_PORT_OML);
 	ipbc->bsc_oml_conn = connect_bsc(&sin, OML_TO_BSC, ipbc);
 	if (!ipbc->bsc_oml_conn) {
 		ret = -EIO;
@@ -588,7 +588,7 @@
 			ipbc->rsl_conn[trx_id] = ipc;
 
 			/* Create RSL TCP connection towards BSC */
-			sin.sin_port = htons(3003);
+			sin.sin_port = htons(IPA_TCP_PORT_RSL);
 			ipbc->bsc_rsl_conn[trx_id] =
 				connect_bsc(&sin, RSL_TO_BSC | (trx_id << 8), ipbc);
 			if (!ipbc->bsc_oml_conn)
@@ -703,7 +703,7 @@
 	llist_for_each_entry(ipbc, &ipp->bts_list, list) {
 		/* if OML to BSC is dead, try to restore it */
 		if (ipbc->oml_conn && !ipbc->bsc_oml_conn) {
-			sin.sin_port = htons(3002);
+			sin.sin_port = htons(IPA_TCP_PORT_OML);
 			logp_ipbc_uid(DINP, LOGL_NOTICE, ipbc, 0);
 			LOGPC(DINP, LOGL_NOTICE, "OML Trying to reconnect\n");
 			ipbc->bsc_oml_conn = connect_bsc(&sin, OML_TO_BSC, ipbc);
@@ -726,7 +726,7 @@
 			priv_nr = ipbc->rsl_conn[i]->fd.priv_nr;
 			priv_nr &= ~0xff;
 			priv_nr |= RSL_TO_BSC;
-			sin.sin_port = htons(3003);
+			sin.sin_port = htons(IPA_TCP_PORT_RSL);
 			logp_ipbc_uid(DINP, LOGL_NOTICE, ipbc, priv_nr >> 8);
 			LOGPC(DINP, LOGL_NOTICE, "RSL Trying to reconnect\n");
 			ipbc->bsc_rsl_conn[i] = connect_bsc(&sin, priv_nr, ipbc);
@@ -1072,12 +1072,14 @@
 	ipp->reconn_timer.data = ipp;
 
 	/* Listen for OML connections */
-	ret = make_listen_sock(&ipp->oml_listen_fd, 3002, OML_FROM_BTS, listen_fd_cb);
+	ret = make_listen_sock(&ipp->oml_listen_fd, IPA_TCP_PORT_OML,
+				OML_FROM_BTS, listen_fd_cb);
 	if (ret < 0)
 		return ret;
 
 	/* Listen for RSL connections */
-	ret = make_listen_sock(&ipp->rsl_listen_fd, 3003, RSL_FROM_BTS, listen_fd_cb);
+	ret = make_listen_sock(&ipp->rsl_listen_fd, IPA_TCP_PORT_RSL,
+				RSL_FROM_BTS, listen_fd_cb);
 
 	return ret;
 }