diff --git a/library/MNCC_Types.ttcn b/library/MNCC_Types.ttcn
index 62fe3a0..7bd47ee 100644
--- a/library/MNCC_Types.ttcn
+++ b/library/MNCC_Types.ttcn
@@ -214,6 +214,26 @@
 	GSM48_SCR_IND_NETW_PROVIDED	(3)
 };
 
+/* 24.008 Table 10.5.122 */
+type enumerated GSM48_cause_coding {
+	GSM48_CAUSE_CS_Q931		('00'B),
+	GSM48_CAUSE_CS_RSVD		('01'B),
+	GSM48_CAUSE_CS_NATIONAL		('10'B),
+	GSM48_CAUSE_CS_GSM		('11'B)
+}
+
+type enumerated GSM48_cause_loc {
+	GSM48_CAUSE_LOC_USER				('0000'B),
+	GSM48_CAUSE_LOC_PRN_S_LU			('0001'B),
+	GSM48_CAUSE_LOC_PUN_S_LU			('0010'B),
+	GSM48_CAUSE_LOC_TRANS_NET			('0011'B),
+	GSM48_CAUSE_LOC_PUN_S_RU			('0100'B),
+	GSM48_CAUSE_LOC_PRN_S_RU			('0101'B),
+	GSM48_CAUSE_LOC_INN_NET				('0111'B),
+	GSM48_CAUSE_LOC_NET_BEYOND			('1010'B)
+}
+
+
 
 template MNCC_number ts_MNCC_number(charstring number,
 				    GSM48_type_of_number ton := GSM48_TON_INTERNATIONAL,
@@ -228,13 +248,16 @@
 }
 
 type record MNCC_cause {
-	int		location,
-	int		coding,
+	GSM48_cause_loc		location,
+	GSM48_cause_coding	coding,
 	int		rec,
 	int		rec_val,
 	int		val,
 	octetstring	diag
-};
+} with {
+	variant (location) "FIELDLENGTH(32)";
+	variant (coding) "FIELDLENGTH(32)";
+}
 
 type record MNCC_useruser {
 	int		proto,