scope:

This document applies to the on-board and on-board to ground communication services, i.e. it covers the data communication: a) between EMS and the ground; b) between functions implemented within the EMS; c) between EMS function and other on-board subsystems. The on-board to ground communication services are covering the data communication between the DHS and the on-ground server relevant to the wireless transfer of energy data and management data of the EMS. 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 network. Furthermore, this document includes conformity assessment requirements.