diff --git a/openbsc/include/sccp/sccp_types.h b/openbsc/include/sccp/sccp_types.h
index c6b1182..9310a6b 100644
--- a/openbsc/include/sccp/sccp_types.h
+++ b/openbsc/include/sccp/sccp_types.h
@@ -380,4 +380,15 @@
 	u_int8_t			data[0];
 } __attribute__((packed));
 
+struct sccp_data_it {
+	/* mandantory */
+	u_int8_t			type;
+	struct sccp_source_reference	destination_local_reference;
+	struct sccp_source_reference	source_local_reference;
+	u_int8_t			proto_class;
+
+	u_int8_t			sequencing[2];
+	u_int8_t			credit;
+} __attribute__((packed));
+
 #endif