diff --git a/library/RSL_Types.ttcn b/library/RSL_Types.ttcn
index 3ac40ce..1f602b9 100644
--- a/library/RSL_Types.ttcn
+++ b/library/RSL_Types.ttcn
@@ -222,6 +222,7 @@
 
 		RSL_IE_OSMO_REP_ACCH_CAP	('01100000'B),
 		RSL_IE_OSMO_TRAINING_SEQUENCE	('01100001'B),
+		RSL_IE_OSMO_TOP_ACCH_CAP	('01100010'B),
 
 		/* ip.access */
 		RSL_IE_IPAC_SRTP_CONFIG		('11100000'B),
@@ -884,6 +885,14 @@
 		boolean			dl_facch_cmd
 	} with { variant (len) "LENGTHTO(rfu,rxqual,ul_sacch,dl_sacch,dl_facch_all,dl_facch_cmd)" }
 
+	type record RSL_IE_OSMO_TopAcchCap {
+		uint8_t			len,
+		boolean			sacch_enable,
+		boolean			facch_enable,
+		uint3_t			rxqual,
+		uint3_t			overpower_db
+	} with { variant (len) "LENGTHTO(sacch_enable,facch_enable,rxqual,overpower_db)" }
+
 	/* union of all IE bodies */
 	type union RSL_IE_Body {
 		RslChannelNr		chan_nr,
@@ -939,6 +948,7 @@
 
 		RSL_IE_OSMO_TrainingSequence osmo_training_sequence,
 		RSL_IE_OSMO_RepAcchCap	rep_acch_cap,
+		RSL_IE_OSMO_TopAcchCap	top_acch_cap,
 
 		RSL_LV		other
 	}
@@ -1002,6 +1012,7 @@
 
 					osmo_training_sequence, iei = RSL_IE_OSMO_TRAINING_SEQUENCE;
 					rep_acch_cap, iei = RSL_IE_OSMO_REP_ACCH_CAP;
+					top_acch_cap, iei = RSL_IE_OSMO_TOP_ACCH_CAP;
 
 					other, OTHERWISE;
 		)" };