diff --git a/include/osmocom/gprs/protocol/gsm_08_18.h b/include/osmocom/gprs/protocol/gsm_08_18.h
index 4c04f6b..679a08e 100644
--- a/include/osmocom/gprs/protocol/gsm_08_18.h
+++ b/include/osmocom/gprs/protocol/gsm_08_18.h
@@ -77,6 +77,25 @@
 	BSSGP_PDUT_PS_HO_COMPLETE	= 0x91,
 	BSSGP_PDUT_PS_HO_CANCEL		= 0x92,
 	BSSGP_PDUT_PS_HO_COMPLETE_ACK	= 0x93,
+	/* PDUs between LCS SAPs */
+	BSSGP_PDUT_PERFORM_LOC_REQ	= 0x60,
+	BSSGP_PDUT_PERFORM_LOC_RESP	= 0x61,
+	BSSGP_PDUT_PERFORM_LOC_ABORT	= 0x62,
+	BSSGP_PDUT_POSITION_COMMAND	= 0x63,
+	BSSGP_PDUT_POSITION_RESPONSE	= 0x64,
+	/* PDUs between RIM SAPs */
+	BSSGP_PDUT_RAN_INFO		= 0x70,
+	BSSGP_PDUT_RAN_INFO_REQ		= 0x71,
+	BSSGP_PDUT_RAN_INFO_ACK		= 0x72,
+	BSSGP_PDUT_RAN_INFO_ERROR	= 0x73,
+	BSSGP_PDUT_RAN_INFO_APP_ERROR	= 0x74,
+	/* PDUs between MBMS SAPs */
+	BSSGP_PDUT_MBMS_START_REQ	= 0x80,
+	BSSGP_PDUT_MBMS_START_RESP	= 0x81,
+	BSSGP_PDUT_MBMS_STOP_REQ	= 0x82,
+	BSSGP_PDUT_MBMS_STOP_RESP	= 0x83,
+	BSSGP_PDUT_MBMS_UPDATE_REQ	= 0x84,
+	BSSGP_PDUT_MBMS_UPDATE_RESP	= 0x85,
 };
 
 /*! BSSGP User-Data header (Section 10.2.1 and 10.2.2) */