diff --git a/library/TRXC_CodecPort.ttcn b/library/TRXC_CodecPort.ttcn
index 6acead0..774b674 100644
--- a/library/TRXC_CodecPort.ttcn
+++ b/library/TRXC_CodecPort.ttcn
@@ -13,8 +13,8 @@
 	TrxcMessage	msg
 }
 
-template TRXC_RecvFrom tr_TRXC_RecvFrom(template TrxcMessage msg) := {
-	connId := ?,
+template TRXC_RecvFrom tr_TRXC_RecvFrom(template ConnectionId cid, template TrxcMessage msg) := {
+	connId := cid,
 	remName := ?,
 	remPort := ?,
 	locName := ?,
@@ -59,4 +59,31 @@
 	msg := msg
 }
 
+function f_TRXC_transceive(TRXC_CODEC_PT pt, ConnectionId conn_id, TrxcMessage tx,
+			   template TrxcMessage tr := ?) return TrxcMessage {
+	var TRXC_RecvFrom rf;
+	timer T := 3.0;
+	/* build better default template */
+	if (istemplatekind(tr, "?")) {
+		tr := {
+			rsp := {
+				verb := tx.cmd.verb,
+				status := ?,
+				params := *
+			}
+		};
+	}
+	pt.send(ts_TRXC_Send(conn_id, tx));
+	T.start;
+	alt {
+	[] pt.receive(tr_TRXC_RecvFrom(conn_id, tr)) -> value rf {
+		return rf.msg;
+		}
+	[] T.timeout {
+		setverdict(fail, "Timeout waiting for ", tr, " on ", pt);
+		}
+	}
+	return rf.msg;
+}
+
 }