Devices across the street from a remote controller

I need to put a 5394 controller at a remote site to twinax connect some
printers and PC's with 5250 emulation cards.  Then across the street I need to
have some more of the same devices.  *But* across the street is a
superhighway, so we can't run any cable; we have to use the phone company's
lines.

Is there a piece of hardware that I can place at each remote site that will
allow the devices 'across the street' to be connected to the 5394?

Scott Lindstrom
Zenith Electronics
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