diff --git a/library/L1CTL_Types.ttcn b/library/L1CTL_Types.ttcn
index 73e09fc..2e1f34b 100644
--- a/library/L1CTL_Types.ttcn
+++ b/library/L1CTL_Types.ttcn
@@ -53,7 +53,8 @@
 		L1CTL_GPRS_DL_TBF_CFG_REQ,
 		L1CTL_GPRS_UL_BLOCK_REQ,
 		L1CTL_GPRS_DL_BLOCK_IND,
-		L1CTL_EXT_RACH_REQ
+		L1CTL_EXT_RACH_REQ,
+		L1CTL_GPRS_RTS_IND
 	} with { variant "FIELDLENGTH(8)" };
 
 	type enumerated L1ctlCcchMode {
@@ -353,6 +354,13 @@
 		octetstring		data
 	} with { variant (data) "BYTEORDER(first)" };
 
+	/* payload of L1CTL_GPRS_RTS_IND */
+	type record L1ctlGprsRtsInd {
+		uint32_t		fn,
+		uint8_t			tn,
+		uint8_t			usf
+	} with { variant "" };
+
 
 	type union L1ctlMsgPayload {
 		L1ctlFbsbReq		fbsb_req,
@@ -384,6 +392,7 @@
 		L1ctlGprsUlBlockReq	ul_block_req,
 		L1ctlGprsDlBlockInd	dl_block_ind,
 		L1ctlExtRachReq		ext_rach_req,
+		L1ctlGprsRtsInd		rts_ind,
 		octetstring		other
 	} with {
 		variant (other) "BYTEORDER(first)"
@@ -438,6 +447,7 @@
 					     ul_block_req, header.msg_type = L1CTL_GPRS_UL_BLOCK_REQ;
 					     dl_block_ind, header.msg_type = L1CTL_GPRS_DL_BLOCK_IND;
 					     ext_rach_req, header.msg_type = L1CTL_EXT_RACH_REQ;
+					     rts_ind, header.msg_type = L1CTL_GPRS_RTS_IND;
 					     other, OTHERWISE;
 				)" };