diff --git a/library/RSL_Types.ttcn b/library/RSL_Types.ttcn
index e1f6af0..d4d0c4d 100644
--- a/library/RSL_Types.ttcn
+++ b/library/RSL_Types.ttcn
@@ -473,6 +473,14 @@
 		frame_nr := tr_RSL_IE_FrameNumber(frame_nr)
 	}
 
+	/* Osmocom Extension */
+	type record RSL_IE_UplinkMeasSuppMeasInfo {
+		int16_t toa256_mean,
+		int16_t toa256_min,
+		int16_t toa256_max,
+		uint16_t toa256_std_dev
+	};
+
 	/* 9.3.25 */
 	type record RSL_IE_UplinkMeas {
 		uint8_t len,
@@ -484,7 +492,7 @@
 		BIT2 reserved2,
 		uint3_t rxq_f_u,
 		uint3_t rxq_s_u,
-		octetstring supp_meas_info optional
+		RSL_IE_UplinkMeasSuppMeasInfo supp_meas_info optional
 	} with { variant (len) "LENGTHTO(rfu,dtx_d,rxlev_f_u,reserved1,rxlev_s_u,reserved2,rxq_f_u,rxq_s_u,supp_meas_info)" };
 
 	/* 9.3.26 */