James Zhu wrote:
>
> Chris,
>
> You can checkout Tachyon.net, they just launched *two* way broadband
> internet access over satellite in march. .9m VSAT dish. Traffic are carried
> over MPEG/DVB. Their service targets to small-mid size businesses and is QOS
> provisioned. They currently have coverage in Europe/North/South America.
Unless something's changed, they don't offer Internet access, just
private networking. If that's your need, then it'll work. If you really
didn't want to install hundreds of locations, it may not be what you
want.
If I could get bidirectional VSAT at DSL prices (with reasonable
equipment charges) and including Internet connectivity, I'd certainly
have a number of applications for that. The Gilat/DISH offering is in
that direction. Nothing else I've seen yet is available for less than
100 times the price (monthly) and excessive equipment pricing (i.e. no,
I don't want a 12 foot dish and dedicated C-band transponders).
> ----- Original Message -----
> From: "Chris Metz" <[email protected]>
> To: <[email protected]>
> Sent: Monday, June 05, 2000 7:27 PM
> Subject: IP over Satellite Questions/References
>
> > Hi-
> > Based on a reference to Dish Network and Gilat I heard the other day on
> > CNBC I am suddenly very curious about the use of satellite for broadband
> > access to the home or business and IP over Satellite in general. As a
> > generalization of the TCP over satellite problems and solutions that have
> > been well documented over the last few years I was wondering about the
> > following:
> >
> > - IP/MPEG/DVB? So are IP packets carried in the MPE capabilities of MPEG
> > for transmission over DVB systems?
> >
> > - What about special satellite-specific link layers? Are MPEG frames
> > carried inside these L2 protocols?
> >
> > - How is the satellite uplink for a bidirectional system done? I am
> > familiar with the DirecPC approach of using a terrestrial (dial, ISDN)
> > uplink from the home. Is the bandwidth symmetrical or asymmetrical?
> >
> > - How much bandwidth is possible? I see that DirecPC advertises 400Kb.
> What
> > are the issues that affect how much bandwidth one can use?
> >
> > Any conferences/tutorials/whitepapers/books that people can recommend to
> > learn about this stuff?
> >
> > Thanks ...
> >
> >
> >
> > Chris Metz
> > Lead IP Architect
> > Solutions Integration
> > Service Provider Line of Business
> > Cisco Systems
> > email: [email protected]
> > offic phone: 408-525-3275
> > home office: 914-241-0423
> > pager: 800-365-4578
> > Internal URL: http://wwwin-people.cisco.com/chmetz/chmetz.htm
> >
-- ----------------------------------------------------------------- Daniel Senie [email protected] Amaranth Networks Inc. http://www.amaranth.com
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