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;
diff --git a/library/L1CTL_Types.ttcn b/library/L1CTL_Types.ttcn
index a86690e..9e659bf 100644
--- a/library/L1CTL_Types.ttcn
+++ b/library/L1CTL_Types.ttcn
@@ -434,6 +434,24 @@
 		}
 	}
 
+	template (value) L1ctlUlMessage t_L1CTL_PAR_REQ(uint8_t ta, uint8_t tx_power) := {
+		header := t_L1ctlHeader(L1CTL_PARAM_REQ),
+		ul_info := {
+			chan_nr := t_RslChanNr_RACH(0),
+			link_id := ts_RslLinkID_DCCH(0),
+			padding := '0000'O
+		},
+		ul_info_tbf := omit,
+		ul_info_abs := omit,
+		payload := {
+			par_req := {
+				ta := ta,
+				tx_power := tx_power,
+				padding := '0000'O
+			}
+		}
+	}
+
 	template L1ctlUlMessage t_L1CTL_DM_EST_REQ(Arfcn arfcn, RslChannelNr chan_nr, GsmTsc tsc) := {
 		header := t_L1ctlHeader(L1CTL_DM_EST_REQ),
 		ul_info := {