ZyXEL 1496R + vgetty ring cadence

• Messages sorted by:[ date ][ thread ][ subject ][ author ]

On 9 Jun 1999, Marc SCHAEFER wrote:

> Date: 9 Jun 1999 08:06:32 +0200
> From: Marc SCHAEFER <schaefer@alphanet.ch>
> To: mgetty@greenie.muc.de
> Newsgroups: alphanet.ml.mgetty
> Subject: Re: ZyXEL 1496R + vgetty ring cadence
> 
> Nichard Rixon <rixon@swbt.net> wrote:
> > taking too much time to read the settings, and dosen't send the +VLS
> > command until about the time when the next ring occurs.  (This is just an
> > observation by watching a tail of the log file.)  The modem never picks
> 
> 06/05 16:44:56 yS1  cannot set controlling tty (ioctl): Operation not permitted
> 06/05 16:44:56 yS1  >>> this might be caused because you have run mgetty/vgetty
> 06/05 16:44:56 yS1  >>> from the command line.  Don't do that, use /etc/inittab!
> 
> Can you check that you run vgetty from inittab ?

For testing, I was running it from the console.  The problem exists either
way.  What it mean "set controlling tty"?  I am guessing it has something
to do with device or file locking.

> 06/05 16:44:56 yS1   voice command: 'AT+FCLASS?' -> ''
> 06/05 16:44:56 yS1    vgetty: AT+FCLASS?
> 06/05 16:44:56 yS1    ZyXEL 1496: AT+FCLASS?
> 06/05 16:45:07 yS1  vgetty: timeout while reading character from voice modem
> 
> Well, you problem is not that a ring comes inappropriately, it's either
> the inittab problem above, or that simply your modem doesn't answer
> commands anymore for some reason.
> 
> I do not adhere by your understanding that vgetty is too slow to
> go from RING to answer, since last RING (the third) is heard at
> 16:44:56, and the first command is done at 16:44:56 too.
> 
> The modem just doesn't answer the first command. Then we timeout.
> 
> Having used a 1496 in voice mode (however 6.19, not 6.13),
> I never saw that happening.
> 
> Can you upgrade one of the modems just to try (after fixing the
> inittab problem above) ?

Please excuse my foolishness thinking that vgetty was too slow.  I must
have thought it was slow because of the pauses in tailing the file.
Indeed, it issues the AT+FCLASS? command immediately after it detects the
RING.

I am guessing this has something wierd to do with the modem, because it
works okay plugged into another line.  The strange thing is, I can type in
all the commands to the modem just as they are logged, but the +FCLASS?
and +VLS=2 command return OK right away.

I put the U1496RN firmware in today at work and tried it out during lunch,
but now it won't detect rings on that TA at all.  The other lines rings
still show up, though.  I'm begining to think that maybe I should just
order another POTS line and be done with it.  Anyhow, I'm going to try out
the 6.20 for the U1496R+ (I have 100nS chips;-) and I'll tell you all how
it works out.

Paul