diff --git a/include/osmocore/Makefile.am b/include/osmocore/Makefile.am
index cc9db08..8754295 100644
--- a/include/osmocore/Makefile.am
+++ b/include/osmocore/Makefile.am
@@ -1,6 +1,6 @@
 osmocore_HEADERS = signal.h linuxlist.h timer.h talloc.h msgb.h select.h \
 		   tlv.h bitvec.h comp128.h statistics.h gsm_utils.h utils.h \
-		   gsmtap.h write_queue.h
+		   gsmtap.h write_queue.h rsl.h
 
 osmocoredir = $(includedir)/osmocore
 
diff --git a/include/osmocore/rsl.h b/include/osmocore/rsl.h
new file mode 100644
index 0000000..3a2b04d
--- /dev/null
+++ b/include/osmocore/rsl.h
@@ -0,0 +1,24 @@
+#ifndef _OSMOCORE_RSL_H
+#define _OSMOCORE_RSL_H
+
+#include <stdint.h>
+#include <osmocore/utils.h>
+#include <osmocore/protocol/gsm_08_58.h>
+
+void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type);
+
+extern const struct tlv_definition rsl_att_tlvdef;
+#define rsl_tlv_parse(dec, buf, len)     \
+			tlv_parse(dec, &rsl_att_tlvdef, buf, len, 0, 0)
+
+/* encode channel number as per Section 9.3.1 */
+uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot);
+
+const struct value_string rsl_rlm_cause_strs[];
+
+const char *rsl_err_name(uint8_t err);
+
+/* Section 3.3.2.3 TS 05.02. I think this looks like a table */
+int rsl_ccch_conf_to_bs_cc_chans(int ccch_conf);
+
+#endif /* _OSMOCORE_RSL_H */
diff --git a/include/osmocore/utils.h b/include/osmocore/utils.h
index 198f45a..cf3b460 100644
--- a/include/osmocore/utils.h
+++ b/include/osmocore/utils.h
@@ -3,4 +3,15 @@
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
+#include <stdint.h>
+
+struct value_string {
+	unsigned int value;
+	const char *str;
+};
+
+const char *get_value_string(const struct value_string *vs, uint32_t val);
+int get_string_value(const struct value_string *vs, const char *str);
+
+
 #endif