diff --git a/library/L1CTL_PortType.ttcn b/library/L1CTL_PortType.ttcn
index 812e284..2775e19 100644
--- a/library/L1CTL_PortType.ttcn
+++ b/library/L1CTL_PortType.ttcn
@@ -64,6 +64,10 @@
 		return fn;
 	}
 
+	function f_L1CTL_PARAM(L1CTL_PT pt, uint8_t ta, uint8_t tx_power) {
+		pt.send(t_L1CTL_PAR_REQ(ta, tx_power));
+	}
+
 	function f_L1CTL_WAIT_IMM_ASS(L1CTL_PT pt, uint8_t ra, GsmFrameNumber rach_fn) return ImmediateAssignment {
 		var L1ctlDlMessage dl;
 		var GsmRrMessage rr;