In this contribution, a brief progress report of the development of the Satellite ATM recommendations by ITU-R Working Part 4B, TIA and IETF standards organizations is presented. These deal with the performance objectives of ATM over satellite and with the availability objectives for ATM transport over satellite. In the subsequent contributions, several performance objectives for GSO and NGSO satellite networks at higher frequencies which plan to use on board ATM switching, processing and intersatellite links will be discussed.

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