diff --git a/library/L1CTL_PortType.ttcn b/library/L1CTL_PortType.ttcn
index 80e33a8..ed235d3 100644
--- a/library/L1CTL_PortType.ttcn
+++ b/library/L1CTL_PortType.ttcn
@@ -42,6 +42,29 @@
 		return len;
 	}
 
+	function f_L1CTL_rx_data(L1CTL_PT pt,
+				 template (present) RslChannelNr chan_nr := ?,
+				 template (present) RslLinkId link_id := ?)
+	return L1ctlDlMessage {
+		var L1ctlDlMessage dl;
+		timer T := 2.0;
+
+		T.start;
+		alt {
+		[] pt.receive(tr_L1CTL_DATA_IND(chan_nr, link_id)) -> value dl {
+			return dl;
+			}
+		[] pt.receive { repeat; }
+		[] T.timeout {
+			setverdict(fail, "Timeout waiting for L1CTL DATA.ind");
+			mtc.stop;
+			}
+		}
+
+		/* Unreachable, make TITAN happy */
+		return dl;
+	}
+
 	function f_L1CTL_FBSB(L1CTL_PT pt, GsmBandArfcn arfcn,
 			      L1ctlCcchMode ccch_mode := CCCH_MODE_COMBINED,
 			      integer rxlev_exp := 57)