ANDQC@CUNYVM (Andrew A. Beveridge) (11/13/90)
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We are trying to connect our building to a campus Ethernet, which then goes on
to TCP/IP. We cannot draw a cable under the street. (Or if we can it will
take us ten years to find out.) The computer center is about 1/4 mile
away. We understand the Infrared is the way to go.
1) What is the cost of such a set-up, and who would be a good vendor?
2) Can Infrared simultaneously handle voice (like from a bunch of
phones for a PBX.
We have priced one set-up out to around 18k. Plus a spare Laser Gun or
whatever they are? Any help would be greatly appreciated. Please E-mail me
direct, and I will put up a summary.
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Andrew A. Beveridge
Department of Sociology
Queens College and Graduate Center
City University of New York
209 Kissena Hall
Flushing, NY 11367 718-520-7093rbrink@hubcap.clemson.edu (Rick Brink) (11/14/90)
From article <90316.113523ANDQC@CUNYVM.BITNET>, by ANDQC@CUNYVM (Andrew A. Beveridge): > ========================================================================= > > We are trying to connect our building to a campus Ethernet, which then goes on > to TCP/IP. We cannot draw a cable under the street. (Or if we can it will > take us ten years to find out.) The computer center is about 1/4 mile > away. We understand the Infrared is the way to go. > Why have you forsaken the standard leased phoneline and modem pair. At 18k, you should be able to run that line for years. The speed for that distance should be pretty high.
eric@cathaus.utcs.utoronto.ca (Eric M Carroll) (11/15/90)
>> We are trying to connect our building to a campus Ethernet, which then goes on >> to TCP/IP. We cannot draw a cable under the street. (Or if we can it will >> take us ten years to find out.) The computer center is about 1/4 mile >> away. We understand the Infrared is the way to go. >> >Why have you forsaken the standard leased phoneline and modem pair. At 18k, >you should be able to run that line for years. The speed for that distance >should be pretty high. Because all the world is not the US. In Canada, at least, a free air IR laser from LCI pays for itself in 3 years in comparison to a 56kb/s leased line running LESS THAN 1 KM! T1 is very expensive, and T3 is unavailable. Assuming T1 in the US, I would suspect ethernet speeds on a free air laser more than compensate for the occasional atmosphere induced downtime. I would also guess the 18k still pays for itself in less than 5 years, even in the US. I have no idea what T3 costs, but I bet its still alot, even in the US. Lasers in certain circumstances are great things. LCI makes a good product. I would recommend them without hesitation. Eric Carroll University of Toronto Computing Services Network Development Support Disclaimer: I was just a happy customer, I no longer use their product. -- Eric Carroll University of Toronto Computing Services Network Development Support