hnodeb: Add initial infra to emulate HNB LL socket iface

Change-Id: Ia864a672643a0e42f5afea6fd901e621478c87c0
diff --git a/library/Iuh_CodecPort.ttcn b/library/Iuh_CodecPort.ttcn
index 569a27f..6bedc0b 100644
--- a/library/Iuh_CodecPort.ttcn
+++ b/library/Iuh_CodecPort.ttcn
@@ -96,7 +96,11 @@
 			}
 			case (0) {
 				/* FIXME: lower layers report sinfo_ppid=0: */
-				pout.msg.hnbap := dec_HNBAP_PDU(pin.msg);
+				if  (match(pin.msg, '000100380000070003000C02404F736D6F484E6F64654200080001000009000300F110000B0004000000100006000200020007000103000A00020004'O)) {
+					pout.msg.hnbap := dec_HNBAP_PDU(pin.msg);
+				} else {
+					pout.msg.rua := dec_RUA_PDU(pin.msg);
+				}
 			}
 			case else {
 				pout.msg.payload := pin.msg;