PPP/Mgetty hang-up problem HELP Please????

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In <37214E2D.12E9FEA1@oldcolo.com> David Hughes <david@oldcolo.com> writes:

>Am running RedHat 5.2 with the supplied mgetty and pppd binaries.  Using
>a 16 port digiboard with a U S Robotics v.everything 33.6 modem.

>Everything is working fine.  Modem/mgetty answers a call, receive PAP
>authentication no prob, routing works, everything. . . except when there
>is a dropped carrier.  If the connection is disabled, the mgeety
>reinitswith no problem for the next call.  However, if I yank the
>connectionand just drop carrier, the pppd process just sits there.  I

Well, this has nothing to do with mgetty. mgetty stays out of the way
until ppp quits (usually by looking at teh lock file, but also if it
initiated the pppd, waiting for pppd to exit) So if pppd stays running
mgetty quite properly waits.

One thing to try is to set up the DTR line so that a DTR drop
reinitalises the modem. (&D3 on my modem). The real problem is that the
modem is not signalling back to pppd that there is nothing there. pppd
does not see any carrier ever-- it just gets bytes from teh serial port.
and if it gets no bytes for a while, that could just be the otehr end
not sending them. 

Ie, This is a modem issue, not an mgetty issue or a pppd issue. Get your
modem to hang up and signal the serial port tht it has hung up, on
carrier drop.