1 Scope
This European Standard applies to the on board and on board to ground communication
services, i.e. it covers the data communication using digital interfaces:
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a) between functions implemented within the EMS;
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b) between EMS function and other on board subsystems;
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c) between EMS and ground communication services.
The on board data communication services of the EMS are covering the data exchange
between functions of the EMS and the data exchange between EMS and other on board
units, where data is exchanged using a communications protocol stack over a dedicated
physical interface or a shared communication network.
The on board to ground communication services are covering the wireless data communication
between the DHS and the on ground server.
Furthermore, this document includes conformity assessment requirements.