655' is the maximum buildout from a mux and probably from a smartjack (it depends on the make/model).

Can you get the carrier to extend the smartjack to the Comm room?

There are T-1 repeaters that will easily push your circuit 1200'.

I would NOT. I Say again, NOT try to run a T-1 400' over Cat 5. 40' maybe, no more. You're only asking for a crappy signal.

Sam


"Where are we going and why are we in this hand basket?"