diff --git a/library/RLCMAC_CSN1_Types.ttcn b/library/RLCMAC_CSN1_Types.ttcn
index d4c6efd..1f1fb0a 100644
--- a/library/RLCMAC_CSN1_Types.ttcn
+++ b/library/RLCMAC_CSN1_Types.ttcn
@@ -395,14 +395,44 @@
 		variant (pwr_ctrl)	"PRESENCE(pwr_ctrl_present = '1'B)"
 		variant (cont_res_tlli) "BYTEORDER(first)"
 	};
+	type record UlAckNackEgprs {
+		EgprsChCodingCommand	ch_coding_cmd,
+		BIT1			resegment,
+		BIT1			preemptive_tx,
+		BIT1			prr_retrans_req,
+		BIT1			arac_retrans_req,
+		BIT1			cont_res_tlli_present,
+		GprsTlli		cont_res_tlli optional,
+		BIT1			tbf_est,
+		BIT1			pkt_ta_present,
+		PacketTimingAdvance	pkt_ta optional,
+		BIT1			pkt_ext_ta_present,
+		BIT2			pkt_ext_ta optional,
+		BIT1			pwr_ctrl_present,
+		PowerControlParameters	pwr_ctrl optional
+		/* TODO: TS 44.060 12.3.1  EGPRS Ack/Nack Description */
+		/* EgprsAckNackDescription	ack_nack_desc, */
+		/* BIT1			not_used('0'B) */
+		/* TODO: Extension Bits, Rel5 ,... */
+	} with {
+		variant (cont_res_tlli)	"PRESENCE(cont_res_tlli_present = '1'B)"
+		variant (pkt_ta)	"PRESENCE(pkt_ta_present = '1'B)"
+		variant (pkt_ext_ta)	"PRESENCE(pkt_ext_ta_present = '1'B)"
+		variant (pwr_ctrl)	"PRESENCE(pwr_ctrl_present = '1'B)"
+		variant (cont_res_tlli) "BYTEORDER(first)"
+	};
 	type record PacketUlAckNack {
 		PageMode		page_mode,
 		BIT2			msg_excape ('00'B),
 		uint5_t			uplink_tfi,
-		BIT1			is_egprs ('0'B),	/* msg escape */
-		UlAckNackGprs		gprs optional
+		BIT1			is_egprs,
+		UlAckNackGprs		gprs optional,
+		UlAckNackEgprs		egprs optional
 		/* TODO: EGPRS */
-	} with { variant (gprs) "PRESENCE(is_egprs = '0'B)" };
+	} with {
+		variant (gprs) "PRESENCE(is_egprs = '0'B)"
+		variant (egprs) "PRESENCE(is_egprs = '1'B)"
+	};
 
 	/* 11.2.8 Packet Downlink Dummy Control Block */
 	type record PacketDlDummy {