diff --git a/library/L1CTL_PortType.ttcn b/library/L1CTL_PortType.ttcn
index bdcf024..7af680c 100644
--- a/library/L1CTL_PortType.ttcn
+++ b/library/L1CTL_PortType.ttcn
@@ -80,12 +80,15 @@
 		}
 	}
 
-	function f_L1CTL_RACH(L1CTL_PT pt, uint8_t ra, uint8_t combined := 1, uint16_t offset := 0) return GsmFrameNumber {
+	function f_L1CTL_RACH(L1CTL_PT pt, uint8_t ra, uint8_t combined := 1, uint16_t offset := 0,
+			      template (value) RslChannelNr chan_nr := ts_RslChanNr_RACH(0),
+			      template (value) RslLinkId link_id := ts_RslLinkID_DCCH(0))
+	return GsmFrameNumber {
 		var L1ctlDlMessage rc;
 		var GsmFrameNumber fn;
 		timer T := 2.0;
 		T.start
-		pt.send(ts_L1CTL_RACH_REQ(ra, combined, offset))
+		pt.send(ts_L1CTL_RACH_REQ(ra, combined, offset, chan_nr, link_id))
 		alt {
 			[] pt.receive(tr_L1CTL_RACH_CONF) -> value rc { fn := rc.dl_info.frame_nr };
 			[] pt.receive { repeat; };