5000' ethernet?

Elliot Finley efinley.lists at gmail.com
Fri Jul 17 19:55:25 UTC 2009

Just for the archives:
A T1 can only run about 600 feet.  Yes, that's right, 600 feet.  When people
talk about T1s running long distances, the reference to 'T1' is only the
signalling at the end.  In the middle, that "T1" will be carried by other
methods such as SONET over fiber for very long distances.  For the "last
mile" it will be carried on HDSL or similar technology.  Or if it's a fairly
long copper path, it can be carried on T-carrier.

But bottom line:  The T1 signal that comes off of a CSU/DSU will reach about
600 feet.

On Fri, Jul 17, 2009 at 1:47 AM, <perryh at pluto.rain.com> wrote:

> David Kelly <dkelly at hiwaay.net> wrote:
> > Not directly FreeBSD related, but how much of a chance is there
> > that two machines could communicate directly over 5,000 feet of
> > cat5 with no special hardware?
> After reading (at least most of) the discussion that has arisen
> from this, I've had another thought which would use the wire
> already ordered -- although it does involve "special hardware".
> Maybe you could set up what would amount to your own two-point
> telco:
> Option 1:  Put a T1 frame-relay box at each end.  I don't know how
> far a T1 can run without a booster of some sort, but I'd think it
> must be more than a mile or it would not have been commercially
> feasible.
> Option 2:  Put an ordinary DSL modem at one end and a DSLAM at the
> other end.  Again I'm not sure what the range is, but DSL used to
> be referred to as the solution for "the last mile" from the telco
> to the customer so it may be up to the job.
> AFAIK neither of these really needs the signal quality of Cat 5 --
> they both should work just fine over Cat 3 -- but surely the higher
> grade wire can't hurt (and it may increase the usable DSL distance).
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