Specialized
services:
1. Satellite-email
services:
The
addition of Internet Access enables Astrium to act as an Internet Service
Provider (ISP) capable of offering Inmarsat users a tailor-made Internet
connection.
With
Internet services added to our range of terrestrial networks, you will no longer
need to subscribe to a third party for Internet access (available for Inmarsat
A, B, M, mini-M, Fleet, GAN, Regional BGAN & SWIFT networks).
We
treat Internet in the same way as the other terrestrial networks we provide,
and thus offer unrestricted access to this service. There is no time- consuming
log-on procedure, as users are not required to submit a user-ID or password.
Description of E-mail Service:
Astrium's
E-Mail service allows Inmarsat users to send and receive e-mail directly
through the Internet without accessing a public telephone network.
Features and Benefits
No need to configure an e-mail client to access a Astrium e-mail account
Service optimized for use with low bandwidth Inmarsat terminals
Filter e-mail by previewing the Inbox and deleting any unwanted e-mails prior
to downloading
No surcharge or monthly subscription fees
Service billed according to standard airtime prices for Inmarsat service used
2. Video
Conferencing (medium resolution):
Video
conferencing technology can be used to provide the same full, two- way
interactivity of satellite broadcast at much lower cost. For Multi-Site
meetings, video conferencing uses bridging systems to connect each site to the
others.
It
is possible to configure a video conference bridge to show all sites at the
same time on a projection screen or monitor. Or, as is more typical, a bridge
can show just the site from which a person is speaking or making a
presentation.
The
technology that makes interactive video conferencing possible, compresses video
and audio signals, thus creating an image quality lower than that of satellite
broadcasts.
3. Satellite
Internet access:
Satellite
Internet access is Internet access provided through communications satellites.
Modern satellite Internet service is typically provided to users through
geostationary satellites that can offer high data speeds, with newer satellites
using Ka band to achieve downstream data speeds up to 50 Mbps.
Satellite
Internet generally relies on three primary components: a satellite in
geostationary orbit (sometimes referred to as a geosynchronous Earth orbit, or
GEO), a number of ground stations known as gateways that relay Internet data to
and from the satellite via radio waves (microwave), and a VSAT (very-small-
aperture terminal) dish antenna with a transceiver, located at the subscriber's
premises.
Other
components of a satellite Internet system include a modem at the user end which
links the user's network with the transceiver, and a centralized network operations
center (NOC) for monitoring the entire system.
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