diff --git a/include/openbsc/a_iface_bssap.h b/include/openbsc/a_iface_bssap.h
new file mode 100644
index 0000000..237c618
--- /dev/null
+++ b/include/openbsc/a_iface_bssap.h
@@ -0,0 +1,41 @@
+/* (C) 2017 by sysmocom s.f.m.c. GmbH
+ * All Rights Reserved
+ *
+ * Author: Philipp Maier
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+/* Note: The structs and functions presented in this header file are intended
+ * to be used only by a_iface.c. */
+
+/* A structure to hold tha most basic information about a sigtran connection
+ * we use this struct internally here to pass connection data around */
+struct a_conn_info {
+	struct osmo_sccp_addr *msc_addr;
+	struct osmo_sccp_addr *bsc_addr;
+	uint32_t conn_id;
+	struct gsm_network *network;
+	struct a_reset_ctx *reset;
+};
+
+/* Receive incoming connection less data messages via sccp */
+void sccp_rx_udt(struct osmo_sccp_user *scu, const struct a_conn_info *a_conn_info, struct msgb *msg);
+
+/* Receive incoming connection oriented data messages via sccp */
+int sccp_rx_dt(struct osmo_sccp_user *scu, const struct a_conn_info *a_conn_info, struct msgb *msg);
+