WIP: Work towards a more real DL TBF receiver implementation

Change-Id: I300312734d99f2b8a406f39e04b4f738940f7579
diff --git a/library/RLCMAC_Types.ttcn b/library/RLCMAC_Types.ttcn
index 3ae1203..c946594 100644
--- a/library/RLCMAC_Types.ttcn
+++ b/library/RLCMAC_Types.ttcn
@@ -113,7 +113,14 @@
 		boolean		e
 	} with {
 		variant (e) "FIELDLENGTH(1)"
+		encode "RAW"
 	};
+
+	external function enc_LlcBlockHdr(in LlcBlockHdr si) return octetstring
+		with { extension "prototype(convert) encode(RAW)" };
+	external function dec_LlcBlockHdr(in octetstring stream) return LlcBlockHdr
+		with { extension "prototype(convert) decode(RAW)" };
+
 	type record LlcBlock {
 		/* Header is only present if LI field was present */
 		LlcBlockHdr	hdr optional,