Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!AQUA.WHOI.EDU!mep
From: mep@AQUA.WHOI.EDU (Michael E. Pare)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  Twisted Pair Ethernet Feedback
Message-ID: <9001171454.AA20840@aqua.whoi.edu>
Date: 17 Jan 90 14:54:07 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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I've installed thick, thin and twisted pair ethernet and highly recommend
twisted pair.  Try to have 22AWG wire installed (greater distances) and 
make sure it isn't shielded (unless you intend to use IBM's shielded wire
system).  Unshielded wiring is more flexible and easier to work with. I have
both and know this from experience.  You will need a backbone format which
could be thick, thin or fiber optics to link the floors together.  You 
shouldn't run twisted pair ethernet vertically (makes for a nice antenna).
You should also have at least 2prs for each connection in order to support
the new 10BASET standard.  Some twisted pair ethernet formats use 2pr now.
I'd recommend at least 4prs for each office for data alone.  Voice extra.

The key step will be in selecting your twisted pair ethernet vendor.  Good
luck.