diff --git a/include/osmocom/msc/bsc_rll.h b/include/osmocom/msc/bsc_rll.h
new file mode 100644
index 0000000..93c80e7
--- /dev/null
+++ b/include/osmocom/msc/bsc_rll.h
@@ -0,0 +1,19 @@
+#ifndef _BSC_RLL_H
+#define _BSC_RLL_H
+
+#include <osmocom/msc/gsm_data.h>
+
+enum bsc_rllr_ind {
+	BSC_RLLR_IND_EST_CONF,
+	BSC_RLLR_IND_REL_IND,
+	BSC_RLLR_IND_ERR_IND,
+	BSC_RLLR_IND_TIMEOUT,
+};
+
+int rll_establish(struct gsm_lchan *lchan, uint8_t link_id,
+		  void (*cb)(struct gsm_lchan *, uint8_t, void *,
+			     enum bsc_rllr_ind),
+		  void *data);
+void rll_indication(struct gsm_lchan *lchan, uint8_t link_id, uint8_t type);
+
+#endif /* _BSC_RLL_H */