diff --git a/include/mtp_data.h b/include/mtp_data.h
new file mode 100644
index 0000000..d8cdff3
--- /dev/null
+++ b/include/mtp_data.h
@@ -0,0 +1,88 @@
+/*
+ * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+#ifndef mtp_data_h
+#define mtp_data_h
+
+#include <laf0rge1/msgb.h>
+#include <laf0rge1/timer.h>
+
+/* MTP Level3 timers */
+
+/* Timers for SS7 */
+#define MTP_T1		12, 0
+#define MTP_T2		30, 0
+#define START_DELAY	 8, 0
+
+/**
+ * The state of the mtp_link in terms of layer3 and upwards
+ */
+struct mtp_link {
+	/* routing info.. */
+	int dpc, opc;
+
+	/* internal state */
+	/* the MTP1 link is up */
+	int available;
+	int running;
+	int sccp_up;
+
+	/* misc data */
+	u_int8_t test_ptrn[14];
+
+	int sltm_pending;
+	struct llist_head pending_msgs;
+	int sltm_once;
+	int was_up;
+
+
+	/* the associated link */
+	int link;
+
+	int slta_misses;
+	struct timer_list t1_timer;
+	struct timer_list t2_timer;
+
+	struct timer_list delay_timer;
+};
+
+
+struct mtp_link *mtp_link_alloc(void);
+void mtp_link_stop(struct mtp_link *link);
+void mtp_link_reset(struct mtp_link *link);
+int mtp_link_data(struct mtp_link *link, struct msgb *msg);
+int mtp_link_submit_sccp_data(struct mtp_link *link, int sls, const u_int8_t *data, unsigned int length);
+
+
+/* one time init function */
+void mtp_link_init(void);
+
+/* to be implemented for MSU sending */
+void mtp_link_submit(struct mtp_link *link, struct msgb *msg);
+void mtp_link_forward_sccp(struct mtp_link *link, struct msgb *msg, int sls);
+void mtp_link_restart(struct mtp_link *link);
+void mtp_link_slta_recv(struct mtp_link *link);
+void mtp_link_sccp_down(struct mtp_link *link);
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+#endif
+
+#endif