diff --git a/library/L3_Templates.ttcn b/library/L3_Templates.ttcn
index 0556c97..6b5f5c2 100644
--- a/library/L3_Templates.ttcn
+++ b/library/L3_Templates.ttcn
@@ -2833,6 +2833,9 @@
 external function enc_MobileIdentityLV(in MobileIdentityLV si) return octetstring
 	with { extension "prototype(convert) encode(RAW)" };
 
+external function dec_MobileIdentityV(in octetstring mi) return MobileIdentityV
+	with { extension "prototype(convert) decode(RAW)" };
+
 
 
 /* SMS TPDU Layer */
diff --git a/library/RLCMAC_CSN1_Types.ttcn b/library/RLCMAC_CSN1_Types.ttcn
index 321049c..1bb6232 100644
--- a/library/RLCMAC_CSN1_Types.ttcn
+++ b/library/RLCMAC_CSN1_Types.ttcn
@@ -204,7 +204,10 @@
 		 * uses a byte. */
 		uint4_t			len,
 		octetstring		mobile_id
-	} with { variant (len) "LENGTHTO(mobile_id)" };
+	} with {
+		variant (len) "LENGTHTO(mobile_id)"
+		variant (mobile_id) "BYTEORDER(first)"
+	};
 	type record PageInfoPs {
 		BIT1			presence ('0'B),
 		BIT1			ptmsi_or_mobile_id,