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1. Introduction
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2. The Europe
Online Networks Default
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3. The BySky
Solution
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4. The 2-way
Solution
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5. Resources
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1.
Introduction:-
This faq is an attempt to
describe some of the methods
by which you can access the
Internet with its various
service protocols such as irc,
http and nntp etc, using
Satellite as your main medium
of connection and transport.
2.
The Europe Online Networks
Default
Solution:- EON
(=Europe Online Networks)
offers a basic solution for
using the Satellite (Astra) for
accessing webpages. This
solution does not care which
or what ISP (Internet Service
Provider) you use. Any ISP will
do. Other providers will
use similar techniques.
Limitations: only HTTP is
supported. So, IRC (chatting),
Napster (MP3 downloading),
POP3/SMTP (e-mail), etc will
not work.
The (somewhat simplified)
explanation on how it
works:
In the above image you will see
how it works (basically).
So what happens when I
request an URL (Universal
Resource Location, for example
http://www.WeetHet.nl) ?
- Your web browser will use
the networking capabilities of
your Operating System
(for example Windows) to send
a request to your ISP. This
typically is done by using
a modem and a phoneline (it
doesn't matter if this is PSTN,
ISDN or ADSL).
- Your ISP will send your URL
request to the EON proxy using
the existing Internet
infrastructure.
- The public proxy at EON
will try to fetch the information
you want (the webpage)
from the Internet.
- Once received the EON
proxy will beam the information
packages to the Astra
Satellite.
- The only part of the
satellite is to relay this
information to your receiver
dish.
- Your receiver dish, hooked
up to the DVB-card, will relay
all received information
to your DVB-card.
- The DVB-card (and the
software that comes with it)
decides if the received
information is for you. If it is, it
will relay this information (again
using the networking
capabilities of your Operating
System) to your webbrowser.
If the entered URL makes
sense, the page will appear. If
the URL does not exist or an
other error occurred, the error
message generated by the EON
proxy will appear on
your computer monitor.
3.
The BySky Solution:-
BySky, a dutch access
provider, uses the EON
infrastructure too. There is just
one
small difference. The
performance is definitely
better. Not just that ! You will
be able
to not only get HTTP
information, but also
POP3/SMTP (e-mail), IRC
(chatting), etc.
So what's the difference then
?
Well, BySky has a dedicated
(upstream only) lease-line
directly to the EON servers.
They even have a private
proxy ! This image will make
things a bit more clearly:
So what happens when I
request an URL (Universal
Resource Location, for example
http://www.WeetHet.nl) ?
- Your webbrowser will use
the networking capabilities of
your Operating System
(for example Windows) to send
a request to the Bysky ISP
connection. This typically
is done by using a modem and
a phoneline (it doesn't matter if
this is PSTN, ISDN or
ADSL).
- BySky will send your URL
request to the EON proxy using
the dedicated (and
faster) lease-line.
- The private proxy at EON
will try to fetch the information
you want (the
webpage) from the Internet.
- Once received the EON
proxy will beam the information
packages to the Astra
Satellite.
- The only part of the
satellite is to relay this
information to your receiver
dish.
- Your receiver dish, hooked
up to the DVB-card, will relay
all received information
to your DVB-card.
- The DVB-card (and the
software that comes with it)
decides if the received
information is for you. If it is, it
will relay this information (again
using the networking
capabilities of your Operating
System) to your webbrowser.
If the entered URL makes
sense, the page will appear. If
the URL does not exist or an
other error occurred, the error
message generated by the EON
proxy will appear on
your computer monitor.
4.
The 2-way Solution:-
This is the most expensive
solution of 'm all. Using a
special dish (oval shaped
instead
of round) you will beam
requests directly TO the
satellite. Current packages like
that
are very expensive and you will
have to pay for each bit you
receive/transmit.
The hardware package does
not only include a
DVB-receiver-card, but also a
DVB-transmitter-card, a special
dish and a special LNB for
transmitting data to the
satellite.
Advantages here are speed en
no HTTP limitation. Also: you
don't need a phone
connection for the
upstream.
So what happens when I
request an URL (Universal
Resource Location, for example
http://www.WeetHet.nl) ?
- Your webbrowser will use
the networking capabilities of
your Operating System
(for example Windows) to send
a request to the EON proxy.
This is done by an
(mostly 16 Kbps) upstream to
the satellite.
- The proxy at EON will try
to fetch the information you
want (the webpage) from
the Internet.
- Once received the EON
proxy will beam the information
packages to the Astra
Satellite.
- The satellite will relay this
information to your receiver
dish.
- Your receiver dish, hooked
up to the DVB-card, will relay
all received information
to your DVB-card.
- The DVB-card (and the
software that comes with it)
decides if the received
information is for you. If it is, it
will relay this information (again
using the networking
capabilities of your Operating
System) to your webbrowser.
If the entered URL makes
sense, the page will appear. If
the URL does not exist or an
other error occurred, the error
message generated by the EON
proxy will appear on
your computer monitor.
One of the providers (in the
Netherlands) offering this
service is IXS.
5.
Resources :-
Newbie Faqs For Satellite and
Usenet
Sattelite Links foreign
language url's, ftp sites
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