Sean Ackley writes:
>The problem is sometimes the modems will flake out and not answer.
>The give a high pitched tone and then just hang.  After hanging up
>you can call back into the PPI 28.8 but not the USR 14.4 Sportster.
 
I've had this problem with several USR Sportsters. At minimum, make
sure the modem has been configured with AT&D2; if it has, try AT&D3.
The latter will force the modem to reset when DTR goes low, assuming
that the firmware hasn't gotten wedged. NOTE for the uncautious: while
most modems do the right thing with &D3 and reset on a DTR high-to-low
_transition_, one brain-damaged modem I have (a Cardinal 9600) resets
on a low _level_ when AT&D3 is used. Of course, this means that if
you're setting the modem with a terminal and a three-wire connection,
as soon as you type AT&D3&W, the modem goes into an
infinite loop resetting itself and you'll never get its attention again.
 
-- Bruce
 
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                                   | in terms I can refute.     -- Piet Hein