ITSO Specification

Current version is V2.1.4

The ITSO Specification defines the key technical items and interfaces that are required to deliver interoperability between both, components of a smart ticketing system – smart media, points of service and back offices, and between separate ticketing systems. The purpose of the Specification is to provide a platform and a tool-box for the implementation of interoperable contactless smart customer media in public transport ticketing and related services .

The ITSO Specification has been kept as open as possible within the constraints of evolving National, European and International standards. It is Crown Copyright, and any manufacturer can produce equipment to be certified for compliance with ITSO Specification. In this way ITSO maximises competition in the supply of systems and components to the commercial benefit of the industry as a whole, in contrast to proprietary systems, which may have only one or limited suppliers for equipment. In general, ITSO promotes open standards but it does not disallow proprietary solutions where they are offered on reasonable, non-discriminatory terms and contribute towards the ultimate objective of interoperability.

ITSO Specification is a technical solution and leaves room for schemes to develop their own business rules.

ITSO Technical Specification 1000:

Each part of the Specification is available as a separate downloadable file. Please note that some of these files are very large and may take some time to download.

Part	Title	Version release
0	Concept & Content	02/2010
1	General Reference	02/2010
2	Customer Media Data and Customer Media Architecture	02/2010
3	Terminals	02/2010
4	HOPS	02/2010
5	Customer Media Data Record Definitions	02/2010
6	Message Data	02/2010
7	ITSO Security Subsystem	02/2010
8	ISAM Detailed Operation (available on request by non-disclosure agreement)
9	Communications	02/2010
10	Customer Media Definitions	02/2010
	ITSO Specification V 2.1.4 Parts 0-7 and 9-10

ITSO Specification V2.1.4 Corrigenda

Corrigenda are amendment documentation, which corrects errors and omissions in the current and/or previous versions of the Specification. The affected part of the Specification is updated to contain what was originally intended and a Corrigendum notice details the affected text.

To review previous version of the ITSO Specification and related documents go to ITSO Specification: previous versions page .

The work on developing the ITSO Specification is continued in order to provide the most secure platform for the implementation and to safeguard the contactless data. Developments are recorded in the form of Technical Notes, and ISADs before publication of an updated version of the Specification and are available for ITSO Members in the Members Section of the web-site.