[comp.dcom.modems] PC AT won't drop DTR under xenix

rac@jc3b21.UUCP (Roger A. Cornelius) (05/29/88)

I'm having a problem getting my system to drop dtr on the modem line.
Up until now, it hasn't really been a problem as I could just turn it
off and then back on, but now I'm trying to get uucp up so I don't 
want the thing to not disconnect after doing a long distance transfer.

If I boot up with DOS, dtr drops fine after using any of the communication
programs.  But when I boot xenix, the first time I access the modem, dtr 
goes high and stays there forever.  ckermit will drop dtr temporarally
after disconnecting from a call, but as soon as I exit ckermit, it goes
high again.  Does anyone have any ideas for me on this?  I'm booting
both OS's on the same PC AT, so I don't see how it could be hardware
that's causing the problem.  I also have the modem configured to NOT force 
dtr.

		PLEASE HELP!!!
Roger
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dave@westmark.UUCP (Dave Levenson) (06/04/88)

In article <398@jc3b21.UUCP>, rac@jc3b21.UUCP (Roger A. Cornelius) writes:
>...But when I boot xenix, the first time I access the modem, dtr 
> goes high and stays there forever.  ckermit will drop dtr temporarally
> after disconnecting from a call, but as soon as I exit ckermit, it goes
> high again...

Perhaps you have a getty or uugetty process active on the port?
It expects incoming calls whenever the modem is not in use, so it
asserts dtr all of the time, to enable auto-answer of incoming
calls.  It should lower dtr momentarily when a caller logs off, and
then re-assert dtr and hold it high.

-- 
Dave Levenson
Westmark, Inc.		The Man in the Mooney
Warren, NJ USA
{rutgers | clyde | mtune | ihnp4}!westmark!dave

bob@rel.eds.com (Bob Leffler) (06/07/88)

In article <195@westmark.UUCP>, dave@westmark.UUCP (Dave Levenson) writes:
> In article <398@jc3b21.UUCP>, rac@jc3b21.UUCP (Roger A. Cornelius) writes:
> >...But when I boot xenix, the first time I access the modem, dtr 
> > goes high and stays there forever.  ckermit will drop dtr temporarally
> > after disconnecting from a call, but as soon as I exit ckermit, it goes
> > high again...
> 
> Perhaps you have a getty or uugetty process active on the port?


Perhaps it might be something as obvious as using the disable command on
tty1A?  When Xenix boots it will restore DTR to whatever state is indicated
in /etc/ttys.


You should disable and enable the ports before and after using a comm program
such as kermit.



-- 
Bob Leffler - EDS, GM Truck & Bus Account (313)456-5375
bob@rel.eds.com or {uunet!edsews, rutgers, umix}!rel!bob
Opinions expressed may not be those of my employer.