Resetting a dialin/dialout modem

[Bill Campbell]

In article <1990May13.031726.644 at tigris.uucp> glee at tigris.UUCP (Godfrey Lee) writes:
>In article <1990May9.171830.17486 at bluemtn.uucp> perry at bluemtn.uucp (Perry Minyard (3MTA3)) writes:
>>Our system is running SCO Xenix 2.3.2, with a Hayes modem off COM1:
>>or {tty1a,tty1A}.
>
>I am doing the same thing and I cannot get the modem to turn Auto-Answer back
>on.  It doesn't seem to pay attention to the Dialers line with the "&".
>
...deleted

Most modern modems have an option that resets the modem to its
power-on state when DTR falls.  You can simply turn auto-answer
off as part of your dialing routine (don't save with &W), and
when the session is complete DTR drops momentarily and your
saved defaults restored.

There was a bug in the dialer source code on Xenix 2.2...
This bug was in the hangup processing (-h option) issued after
you were through.  I forget the exact details, but I think the
dialer would fail if it didn't receive on OK response to +++ to
wake up the modem.  This would leave the line with the DIALOUT
login requiring system reset or diddling either /etc/wtmp or
/etc/utmp (I forget which).

I could probably find my patched version of the dialer I used
before switching to dialTBIT.c
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