Problem with I-modem

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Hi,

On Fri, Nov 13, 1998 at 07:26:01PM +0100, Mikael Jokela wrote:
> Are there any known problems in mgetty with USR Courier I-modem
> which cause the modem not to answer to data calls and claim
> to be busy? 

Not known to me *BUT* I did not test incoming calls too much.

*stop*

Well, I did, indeed - one of my customers (medat.de) is using I-Modems 
for remote dialin atj customer sites, and ISDN login for data download
purposes.  They do not get *that* many calls, but about 100 calls per 
day is what a few of those I-Modems will get.

I did not hear any negative reports recently, and since "modem dialup" is
mostly my responsibility, I assume that this means "this problem didn't
happen".

> My I-modem is doing this. After giving atz! it answers calls for 
> a while but then I'll have to reset it again anyway. I took it 
> to service and they changed it but it's still doing the same. 

Which firmware version is that? To what kind of ISDN line is it
connected? In-house PABXs tend to be "strange" in kind of ISDN 
protocols, and some of them are pretty unreliable sometimes.

> I expect they're going to tell me next time that Linux/mgetty is 
> unsupported and claim mgetty of the problem..

*sigh* - well, yes.  But if you can show the effect from a Windows
terminal program (Hyperterm), that should convince them.

[..]
> 11/13 15:15:44 yS1  wfr: waiting for ``RING''
> 11/13 15:15:44 yS1  send: ATA[0d]
> 11/13 15:15:44 yS1  waiting for ``CONNECT''
> 11/13 15:17:04 yS1  timeout in chat script, waiting for `CONNECT'
> 11/13 15:17:04 ##### failed timeout dev=ttyS1, pid=4677, caller='none',
> conn='',
>  name=''

I have seen such reports on this list.  It seems to mean "some other
device on the same ISDN bus took the call, and the I-Modem did not
realize" (which would mean "ISDN D-Channel protocol bug").

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de