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CONFIDENTIALITY STATEMENT
This document contains information that is private and Confidential, and is supplied on the express condition that it is not to be
used for any purpose other than the purpose for which it was issued, nor is it to be copied or communicated in whole or in part, to
any third party other than the recipient organization, without the prior written permission of EMS Technologies Canada, Ltd.
Copyright © EMS Technologies Canada, Ltd.
HSD Aeronautical Transceivers
2
Introducing HSD aeronautical transceivers
HSD aeronautical transceivers provide a digital connection,
between aircraft and ground communication networks,
using the Inmarsat Satellite Communications system and
the international public telephone network.
HSD products support EIA/TIA-232, ISDN, and Ethernet
connectivity between an aircraft and selected Land Earth
Stations, using the Inmarsat Satellite Communications
system and the international Public Switched Telephone
Network (PSTN).
The HSD transceivers act as a Mobile Earth Station
(MES)—sending and receiving voice, fax, video, and data
over satellite links.
Services and features
HSD transceivers’ services and features vary depending on
the model and installation configuration-mode. The
following section provides descriptions of all HSD models
and configuration-modes documented in this User’s Guide.
HSD transceivers are available in models that are installed
as stand-alone systems or integrated into existing SATCOM
systems.