Add to Richard for Ming -
Thee are limitations and growing commercial pushback from NT-based 
receiver-routers.  I would sugest looking at Linux-based solutions.
Chris
-----Original Message-----
From:	richard wood [SMTP:[email protected]]
Sent:	Thursday, January 13, 2000 12:26 AM
To:	[email protected]
Cc:	[email protected]
Subject:	RE: QPSK modulator card / Vendors Needed
Gilat Satellite Networks, are both a service provider & a Manufacturer.
see www.gilat.com under the Skyblaster section, This is a modification of 
the Skysurfer System, but using DVB technology as oposed to thier own 
bespoke architecture.
The system is curently NT Based, I do not know if they ar planing a linux 
version.  However I think the Recive card is based upon the Broadlogic 
Satellite Express Cards www.broadlogic.com which which do have Linux 
Drivers.
The return path is a gilat proprietry system, which I belive requires a 
costly hub based at the uplink.
I have sucessfully built a linux based router, using a Broadlogic DVB 
Receive card for the High speed satellite receive.  One ethernet board for 
the local lan, and another used as a return path connected to a standard 
satellite modulator via an ethernet bridge.  The Hub site is built using a 
router a DVB IP Encapsulator, and a bank of recievers with ethernet 
bridges.
There are companies that are building comercial versions of the system 
described above, but when I was last working on this project none of them 
had implemented any satellite return path, hence the ethernet bridge setup.
Richard Wood
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