User's Manual

Table Of Contents
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 1-1
3 JUN 10
SYSTEM DESCRIPTION
This section includes basic information about HSD-440 Mark 2 Terminals, and includes the following
sections:
Inmarsat System Overview
Equipment Overview
Equipment Specifications
System Interfaces
User Interfaces
Software Description
1. Inmarsat System Overview
This section provides an overview of the Inmarsat satellite communications system and
networks.
The satellite communication system includes global satellite networks, Land Earth Stations
(LESs), Ground Earth Stations (GESs), Aircraft Earth Stations (AESs), and Mobile Earth
Stations (MESs).
The LES/GES is the part of the satellite communication system that is on the ground. These
numerous, international stations are responsible for routing voice and data calls from the
MES/AES to their destinations around the world.
The MES/AES is the part of the satellite communication system that is on the aircraft. This
station includes the following components:
HSD-440 Mark 2 Terminal
Antenna subsystem
Cabin communications system
Analog connected telephones
Cockpit voice system
Other aircraft avionics
Figure 1-1 illustrates a simplified satellite communications system.