mgetty 0.98

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Hi,

Jon Lewis wrote:
> > My proposal would be to initialize with AT&F (to get a known state) and
> > just set those things that are different from the factory defaults. On a
> > reasonable modem, this isn't very much anyway.
> 
> The part that worries me is this:
> 12/12 23:24:59 yRL  lowering DTR to reset Modem
> 12/12 23:25:00 yRL  send: AT&F1[0d]
> 12/12 23:25:00 yRL  waiting for ``OK'' ** found **
> 12/12 23:25:00 yRL  send: ATS2=42S13=1S19=45[0d]
> 12/12 23:25:00 yRL  waiting for ``OK'' ** found **
> 
> When mgetty says "lowering DTR to reset Modem", does it really mean 
> reset, or just hang up.  

Depends on the setting of AT&D. If my memory doesn't fail, &D0 is "ignore
DTR", &D1 is "go to command mode", &D2 is "hang up" and &D3 is "reset" (on
the ZyXEL, but most other modems will do this as well).

> According to USR factory defaults, the modem 
> will hang up on DTR loss...but not reset.  You hvae to set S13=1 for it 
> to reset on DTR loss.  Setting S13=1 was crucial under getty_ps...made it 
> _almost_ always work properly.  With S13=1 not in the power-on config, am I 
> likely to have the trouble under mgetty that I had with getty_ps?

Hmmm, I'd say, it won't harm to set S13=1, but I don't think that it's
crucial. As long as the modem returns to command mode on DTR drop, it
should work.

> I may just experiment on the modem bank next time I'll be around it for a 
> while and see what happens.

Fine, let me know.

As for your original proposal: I don't see yet how you'd do the check "is
the setup still unchanged" -- do you want to compare the full output of
AT&V (ATi4 on the USR, I think) with a "desired" one?

gert

-- 
                                                            //www.muc.de/~gert
Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-3545980 <---new!!!              gert.doering@physik.tu-muenchen.de