asterisk users - Apr 2006 - OT: HOWTO: Create a 90mbit bonded link 600 metres away with Cat 3 or telco wire [long]

> I was given the challenge recently of creating a LAN-LAN bridge
between
> two
> buildings several
> hundred metres from each other, using only existing Cat 3 wiring and
> without
> having to resort
> to an expensive and finicky 5 Ghz wireless link. I was able to create
a 90
> megabit link for
> about $3,000 Cdn with new PC's, CentOS 4.1, and the newly avaliable
Black
> Box VDSL Ethernet
> Extender, which supports 30 megabits over a single twisted pair.
Be very carefully running copper loops between buildings without proper
isolation. Google will probably tell you all about it.

James

> yeah that's what came up before when I asked the list about this a
couple
> months ago. The concensus was that in the case of a lightning strike
or
> what
> have you the 24 awg copper would immediately fry and would not
transmit
> too
> much of the current sustained. of course my neat little trick here
would
> be
> fried all to hell, but...
I was more concerned about ground loops, but I didn't read your post
properly. The device you have mentioned is specifically designed for
situations such as yours so the only thing you need to really worry
about is lightning strikes, and you've already done your risk analysis
on that. So forget I spoke :)

James