diff --git a/library/L1CTL_Types.ttcn b/library/L1CTL_Types.ttcn
index 7894706..4b68c61 100644
--- a/library/L1CTL_Types.ttcn
+++ b/library/L1CTL_Types.ttcn
@@ -41,7 +41,9 @@
 		L1CTL_TRAFFIC_CONF,
 		L1CTL_TRAFFIC_IND,
 		L1CTL_TBF_CFG_REQ,
-		L1CTL_TBF_CFG_CONF
+		L1CTL_TBF_CFG_CONF,
+		L1CTL_DATA_TBF_REQ,
+		L1CTL_DATA_TBF_CONF
 	} with { variant "FIELDLENGTH(8)" };
 
 	type enumerated L1ctlCcchMode {
@@ -166,6 +168,11 @@
 		OCT2		padding
 	} with { variant "" };
 
+	type record L1ctlUlTbfInfo {
+		uint8_t		tbf_nr,
+		OCT3		padding
+	} with { variant "" };
+
 	type record L1ctlFbsbFlags {
 		BIT5		padding,
 		boolean		sb,
@@ -270,6 +277,7 @@
 	type record L1ctlUlMessage {
 		L1ctlHeader	header,
 		L1ctlUlInfo	ul_info optional,
+		L1ctlUlTbfInfo	ul_info_tbf optional,
 		L1ctlUlPayload	payload
 	} with { variant (ul_info) "PRESENCE(header.msg_type = L1CTL_RACH_REQ,
 					     header.msg_type = L1CTL_PARAM_REQ,
@@ -279,6 +287,7 @@
 					     header.msg_type = L1CTL_DM_FREQ_REQ,
 					     header.msg_type = L1CTL_DM_REL_REQ,
 					     header.msg_type = L1CTL_TRAFFIC_REQ)"
+		 variant (ul_info_tbf) "PRESENCE(header.msg_type = L1CTL_DATA_TBF_REQ)"
 		 variant (payload) "CROSSTAG(fbsb_req, header.msg_type = L1CTL_FBSB_REQ;
 					     ccch_mode_req, header.msg_type = L1CTL_CCCH_MODE_REQ;
 					     tch_mode_req, header.msg_type = L1CTL_TCH_MODE_REQ;
@@ -323,6 +332,7 @@
 	template L1ctlUlMessage t_L1ctlResetReq(template L1ctlResetType rst_type) := {
 		header := t_L1ctlHeader(L1CTL_RESET_REQ),
 		ul_info := omit,
+		ul_info_tbf := omit,
 		payload := {
 			reset_req := {
 				reset_type := rst_type,
@@ -335,6 +345,7 @@
 	template L1ctlUlMessage t_L1CTL_FBSB_REQ(template Arfcn arfcn, template L1ctlFbsbFlags flags, uint8_t sync_info_idx, L1ctlCcchMode ccch_mode, GsmRxLev rxlev_exp) := {
 		header := t_L1ctlHeader(L1CTL_FBSB_REQ),
 		ul_info := omit,
+		ul_info_tbf := omit,
 		payload := {
 			fbsb_req := {
 				arfcn := arfcn,
@@ -370,6 +381,7 @@
 			link_id := ts_RslLinkID_DCCH(0),
 			padding := '0000'O
 		},
+		ul_info_tbf := omit,
 		payload := {
 			rach_req := {
 				ra := ra,
@@ -386,6 +398,7 @@
 			link_id := ts_RslLinkID_DCCH(0),
 			padding := '0000'O
 		},
+		ul_info_tbf := omit,
 		payload := {
 			dm_est_req := {
 				tsc := tsc,
@@ -405,6 +418,7 @@
 			link_id := ts_RslLinkID_DCCH(0),
 			padding := '0000'O
 		},
+		ul_info_tbf := omit,
 		payload := {
 			other := ''O
 		}
@@ -417,6 +431,7 @@
 			link_id := link_id,
 			padding := '0000'O
 		},
+		ul_info_tbf := omit,
 		payload := {
 			other := l2_data
 		}
@@ -425,6 +440,7 @@
 	template L1ctlUlMessage t_L1CTL_TBF_CFG_REQ(boolean is_uplink, TfiUsfArr tfi_usf) := {
 		header := t_L1ctlHeader(L1CTL_TBF_CFG_REQ),
 		ul_info := omit,
+		ul_info_tbf := omit,
 		payload := {
 			tbf_cfg_req := {
 				tbf_nr := 0,
@@ -448,6 +464,18 @@
 		}
 	};
 
+	template L1ctlUlMessage t_L1CTL_DATA_TBF_REQ(octetstring l2_data, uint8_t tbf_nr := 0) := {
+		header := t_L1ctlHeader(L1CTL_DATA_TBF_REQ),
+		ul_info := omit,
+		ul_info_tbf := {
+			tbf_nr := tbf_nr,
+			padding := '000000'O
+		},
+		payload := {
+			other := l2_data
+		}
+	}
+
 	/* for matching against incoming RACH_CONF */
 	template L1ctlDlMessage t_L1CTL_RACH_CONF := {
 		header := t_L1ctlHeader(L1CTL_RACH_CONF),