>It seems that the modem isn't reporting when it gets dumped... The external
>modem I use with the Mac box reports dropped connections, and pppd quits,
>but I'm not quite sure how to do this with the Intel machine. (I'm using the
>same ppp-up script on the two machines, so I assumed the behaviour would
>be the same.)

The problem is probably that the modem isn't dropping DCD when it
loses carrier.  There should be either a DIP switch or an AT command
to control the behavior of DCD, hopefully you still have documents for
the modem.
-- 
Mike Long <mikel@shore.net>                http://www.shore.net/~mikel
"Every normal man must be tempted at times to spit on his hands,
hoist the black flag, and begin slitting throats." -- H.L. Mencken