diff --git a/libosmocore/include/osmocore/gsm_utils.h b/libosmocore/include/osmocore/gsm_utils.h
new file mode 100644
index 0000000..c770cc9
--- /dev/null
+++ b/libosmocore/include/osmocore/gsm_utils.h
@@ -0,0 +1,59 @@
+/* GSM utility functions, e.g. coding and decoding */
+/*
+ * (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
+ * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009 by Harald Welte <laforge@gnumonks.org>
+ *
+ * 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 GSM_UTILS_H
+#define GSM_UTILS_H
+
+#include <sys/types.h>
+
+enum gsm_band {
+	GSM_BAND_850	= 1,
+	GSM_BAND_900	= 2,
+	GSM_BAND_1800	= 4,
+	GSM_BAND_1900	= 8,
+	GSM_BAND_450	= 0x10,
+	GSM_BAND_480	= 0x20,
+	GSM_BAND_750	= 0x40,
+	GSM_BAND_810	= 0x80,
+};
+
+int gsm_7bit_decode(char *decoded, const u_int8_t *user_data, u_int8_t length);
+int gsm_7bit_encode(u_int8_t *result, const char *data);
+
+int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm);
+int ms_pwr_dbm(enum gsm_band band, u_int8_t lvl);
+
+/* According to TS 08.05 Chapter 8.1.4 */
+int rxlev2dbm(u_int8_t rxlev);
+u_int8_t dbm2rxlev(int dbm);
+
+/* According to GSM 04.08 Chapter 10.5.2.29 */
+static inline int rach_max_trans_val2raw(int val) { return (val >> 1) & 3; }
+static inline int rach_max_trans_raw2val(int raw) {
+	const int tbl[4] = { 1, 2, 4, 7 };
+	return tbl[raw & 3];
+}
+
+void generate_backtrace();
+#endif