Target 28k8 faxmodem fax (not) receiving

Gert Doering (gert@greenie.muc.de)
Tue, 29 Sep 1998 22:35:20 +0200


Hi,

On Fri, Sep 25, 1998 at 12:59:23AM +0200, Hans wrote:
> What is a COMREC error?

Something bad.  I'm not exactly sure when it happens, but it usually
means that somewhere deep in the guts of the T.30 fax protocol, your
modem and the other end disagreed.

> should I buy a better faxmodem, or upgrade mgetty?

Upgrading mgetty won't help, this is a modem thing.  Getting a better
faxmodem would help, yes.

> or is it just a configuration problem?

Unlikely, but let's see what the log says:

> 09/17 20:11:38 yS2    got:[0d][0a]OK[0d]
> 09/17 20:11:38 yS2   mdm_command: string 'OK' -> OK
> 09/17 20:11:38 yS2  mdm_send: 'AT+FLID="-Just-my-other-phone-"'

Do you really have that text here, or do you just try to hide your phone
number?

> 09/17 20:11:38 yS2    got:[0a]AT+FBOR=0[0d]
> 09/17 20:11:38 yS2   mdm_command: string 'AT+FBOR=0'
> 09/17 20:11:38 yS2    got:[0d][0a]OK[0d]
> 09/17 20:11:38 yS2   mdm_command: string 'OK' -> OK
> 09/17 20:11:38 yS2  mdm_send: 'AT+FDCC=1,5,0,2,0,0,0,0'
> 09/17 20:11:38 yS2    got:[0a]AT+FLID="-Just-my-other-phone-"[0d]
> 09/17 20:11:38 yS2   mdm_command: string 'AT+FLID="-Just-my-other-phone-"'
> 09/17 20:11:38 yS2    got:[0d][0a]OK[0d]

In any case: there IS a misconfiguration here, the modem and the host
are getting out of sync (you see the echo of command "ATxyz" not 
after this command, but after the *next* command in chain!).  I think
your modem returns two "OK" strings after "ATI2" or something like this,
so you'll have to wait for that in the "statistics" sequence (or disable
it completely for testing).

I don't think it's related to your problems, but it's bad anyway.

[..]
> 09/17 20:12:04 yS2    CND: ATA[0d][0a]+FCON
> 09/17 20:12:12 yS2  found action string: ``+FCON''
> 09/17 20:12:12 yS2  start fax receiver...
> 09/17 20:12:12 yS2   fax receiver: entry
> 09/17 20:12:12 yS2  fax_wait_for(OK)
> 09/17 20:12:12 yS2    got:[0a][0d][0a][e0][e0][e0][00][00][00][e0][00][e0]
>                 [e0][e0][e0][00][e0][e0][e0][00][00][e0][00][e0][00][00]
> 		[00][00][00][00][e0][e0][e0][00][e0][00][00][e0][00][00]

This could just hint at "I want to use 'switchbd 19200'".  Definitely
looks like wrong baud rate.

gert

PS: Please fix your e-mail program.  It puts broken mail addresses in
the headers ("hans@comerwell.comerwell" is nonsense).
-- 
Gert Doering
Mobile communications ... right now writing from *AWAY* :-)) 
... mobile phone: +49 177 2160221 ... or mail me:  gert@greenie.muc.de