diff --git a/library/PCUIF_Types.ttcn b/library/PCUIF_Types.ttcn
index 17adbd1..750e0b4 100644
--- a/library/PCUIF_Types.ttcn
+++ b/library/PCUIF_Types.ttcn
@@ -67,12 +67,10 @@
 	PCUIF_Text	text
 } with { variant "" };
 
-type octetstring OCT162 length(162) with { variant "FIELDLENGTH(162)" };
-
 type record PCUIF_data {
 	PCUIF_Sapi	sapi,
 	uint8_t		len,
-	OCT162		data,
+	octetstring	data length(162),
 	uint32_t	fn,
 	uint16_t	arfcn,
 	uint8_t		trx_nr,
@@ -82,7 +80,7 @@
 	uint16_t	ber10k,
 	int16_t		ta_offs_qbits,
 	int16_t		lqual_cb
-} with { variant "" };
+} with { variant (data) "FIELDLENGTH(162), ALIGN(left)" };
 
 type record PCUIF_data_cnf_dt {
 	PCUIF_Sapi	sapi,
@@ -373,7 +371,7 @@
 						 template (value) uint8_t ts_nr,
 						 template (value) uint8_t block_nr,
 						 template (value) PCUIF_Sapi sapi,
-						 template (value) OCT162 data,
+						 template (value) octetstring data,
 						 template (value) uint32_t fn,
 						 template (value) uint16_t arfcn,
 						 template (value) int8_t rssi := -80,
@@ -405,7 +403,7 @@
 					 template uint8_t ts_nr := ?,
 					 template uint8_t block_nr := ?,
 					 template PCUIF_Sapi sapi := ?,
-					 template OCT162 data := ?) := {
+					 template octetstring data := ?) := {
 	msg_type := PCU_IF_MSG_DATA_IND,
 	bts_nr := bts_nr,
 	spare := ?,