This International Standard establishes a common framework data structure for unambiguous identification in
RTTT/ITS systems. It excludes any physical aspects such as interfaces. It is neither frequency- nor air
interface protocol-specific.
Data elements that form part of transmission or storage protocols such as headers, frame markers and
checksums are thus excluded.
The specifications for protecting against changes, classifying and qualifying security aspects of the data
structure elements are not included within this International Standard.
The principles of data element structure and description determined in ISO/IEC 8824, ISO/IEC 8825-1 and
ISO/IEC 8825-2 have been adopted to provide an interoperable architecture within a standard framework
according to guidelines from ISO/TC 204 and CEN/TC 278.
This International Standard defines data structures based on the ISO/IEC 8824-1 ASN.1 UNIVERSAL CLASS
types that may be directly IMPORTED to other application standards that would need only subsets of the full
APPLICATION CLASS types. These UNIVERSAL CLASS and APPLICATION CLASS types are uniquely
defined as an ASN.1 module in Annex B. This module may be directly linked into an application data definition.
This International Standard defines default encoding for simple AVI/AEI applications where no other relevant
application standard exists.