This International Standard provides the specifications of:
¿ common AVI/AEI transaction requirements, which define the common steps of any AVI/AEI transaction;
¿ AVI/AEI application interface to standardized wireless protocols (referred to as the “Air Interface”)
supporting the AVI transaction requirements, so as to enable interoperability.
In Figure 1 the conceptual architecture model is shown for AVI transactions between “On-board Equipment”
and “Fixed Equipment”. The air interface concerns the reference point DELTA in ISO 14814.