diff --git a/library/RSL_Types.ttcn b/library/RSL_Types.ttcn
index 1062496..f073fbc 100644
--- a/library/RSL_Types.ttcn
+++ b/library/RSL_Types.ttcn
@@ -634,6 +634,16 @@
 			t_RSL_IE(RSL_IE_Body:{link_id := link_id})
 		}
 	}
+	template RSL_Message tr_RSL_REL_REQ(template RslChannelNr chan_nr,
+					    template RslLinkId link_id) := {
+		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_RLL, false),
+		msg_type := RSL_MT_REL_REQ,
+		ies :={
+			tr_RSL_IE(RSL_IE_Body:{chan_nr := chan_nr}),
+			tr_RSL_IE(RSL_IE_Body:{link_id := link_id}),
+			*
+		}
+	}
 
 	/* 8.3.8 BTS -> BSC */
 	template RSL_Message ts_RSL_REL_CONF(RslChannelNr chan_nr, RslLinkId link_id) := {
@@ -712,6 +722,15 @@
 		}
 	}
 
+	/* 8.4.5 BSC -> BTS */
+	template RSL_Message tr_RSL_DEACT_SACCH(template RslChannelNr chan_nr) := {
+		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_DCHAN, false),
+		msg_type := RSL_MT_DEACTIVATE_SACCH,
+		ies := {
+			tr_RSL_IE(RSL_IE_Body:{chan_nr := chan_nr})
+		}
+	}
+
 	/* 8.4.11 BTS -> BSC */
 	template RSL_Message ts_RSL_MODE_MODIFY_NACK(RslChannelNr chan_nr, RSL_Cause cause)
 	modifies ts_RSL_CHAN_ACT_NACK := {