That is not necessarily true, Charles.  It is nice to have P.C.
programmable capability, but what if you're away from your
computer?  The Adi-At600 is pretty accessible and on that one you
can set P.L.'s without the aid of a computer.  Unfortunately the
factory where they were built was destroyed and at last check
they were not being manufactured but Premier Communications hopes
to put that model back into production.

Harvey