diff --git a/library/RSL_Types.ttcn b/library/RSL_Types.ttcn
index cd4ba58..3b1a311 100644
--- a/library/RSL_Types.ttcn
+++ b/library/RSL_Types.ttcn
@@ -1318,6 +1318,18 @@
 		}
 	}
 
+	/* 8.4.15: BTS <- BSC */
+	template (value) RSL_Message ts_RSL_MS_PWR_CTRL(template (value) RslChannelNr chan_nr,
+							template (value) RSL_IE_MS_Power ms_power) := {
+		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_DCHAN, false),
+		msg_type := RSL_MT_MS_POWER_CONTROL,
+		ies := {
+			t_RSL_IE(RSL_IE_CHAN_NR, RSL_IE_Body:{chan_nr := chan_nr}),
+			t_RSL_IE(RSL_IE_MS_POWER, RSL_IE_Body:{ms_power := ms_power})
+			/* One optional IE: MS POWER PARAMETERS */
+		}
+	}
+
 	/* 8.4.19 BTS -> BSC */
 	template (value) RSL_Message ts_RSL_RF_CHAN_REL_ACK(template (value) RslChannelNr chan_nr) :=
 		ts_RSL_MsgDiscType(ts_RSL_MsgDisc(RSL_MDISC_DCHAN, false),