[c-nsp] rescue router for DS3 service

[Robert E.Seastrom]

"Bill Wichers" <billw at waveform.net> writes:

>> Physically, can this be done?
>
> No, this can not be done. You can't split the DS3 cable since you'll mess
> up the cable impedance, cause reflections, and alter all the signal levels
> on the wire.

"The difference between theory and practice is that in theory they're
the same thing, but in practice they're not".

There's no such thing as a perfect transmission line.  Reflections,
impedance lumpiness, and things not being quite up to snuff are facts
of life.  That's why we have tolerances on things.

So, *if* the cable run is short, and *if* the legs of your "Y" are as
short as possible, and *if* you have one set of transmitter/receiver
shut down, and *if* it is your lucky day, it may just work!

> What you're talking about would be like using one 10/100
> Ethernet port to serve two computers, which would present all the same
> kinds of problems

Like this?  http://www.snort.org/docs/tap/

(yes, it works...  usually...  with modern hw)  :)

                                        ---Rob