now we get up to the SETUP of MO calls
diff --git a/include/openbsc/abis_rsl.h b/include/openbsc/abis_rsl.h
index 219fdd3..7696728 100644
--- a/include/openbsc/abis_rsl.h
+++ b/include/openbsc/abis_rsl.h
@@ -244,6 +244,22 @@
#endif
} __attribute__ ((packed));
+/* Chapter 9.3.22 */
+#define RLL_CAUSE_T200_EXPIRED 0x01
+#define RLL_CAUSE_REEST_REQ 0x02
+#define RLL_CAUSE_UNSOL_UA_RESP 0x03
+#define RLL_CAUSE_UNSOL_DM_RESP 0x04
+#define RLL_CAUSE_UNSOL_DM_RESP_MF 0x05
+#define RLL_CAUSE_UNSOL_SPRV_RESP 0x06
+#define RLL_CAUSE_SEQ_ERR 0x07
+#define RLL_CAUSE_UFRM_INC_PARAM 0x08
+#define RLL_CAUSE_SFRM_INC_PARAM 0x09
+#define RLL_CAUSE_IFRM_INC_MBITS 0x0a
+#define RLL_CAUSE_IFRM_INC_LEN 0x0b
+#define RLL_CAUSE_FRM_UNIMPL 0x0c
+#define RLL_CAUSE_SABM_MF 0x0d
+#define RLL_CAUSE_SABM_INFO_NOTALL 0x0e
+
/* Chapter 9.3.26 */
#define RSL_ERRCLS_NORMAL 0x00
#define RSL_ERRCLS_RESOURCE_UNAVAIL 0x20