USR Courier

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Hi,

On Wed, Sep 30, 1998 at 11:26:35PM +0200, Kurt Garloff wrote:
> > Anyone want to buy a USR 56K Sportster ;)
> 
> Don't know what your problems with USR Sportster were, but I had some
> trouble with a 56K prof Message Modem.
> 
> a) Had to send an AT to it, before it accepted incoming voice calls
> b) Changed to +FCC=1,5,0,2,0,0,0,0,5
> c) changed faxspool to adjust the page size (1728x2196)
> 
> Patches against 1.1.18-Sep1 are appended.
> 
> a) It is documented that some USR need AT to adjust speed properly and to
>  prevent noise from the line. I didn't figure out a setting to fix this. So I
>  patched vgetty instead.

Is that still necessary with 1.1.18?  Marc has done some work on this, so
I thought that it's fixed.  In any case, you should be able to achieve
this with a proper "post-init-chat".

> b) If I correctly remember the meaning of +FCC, there is a firmware bug:
>   AT+FCC=1,5,0,2,0,0,0,0
>     +FIS:1,3,0,2,1,0,1,2
>     +FCS:1,3,0,2,0,0,0,0
>     +FHS:25
>   And I think the last one should read
>     +FCS:1,3,0,2,0,0,0,2 (or ,3 ?)
>     
>   Patching sendfax to use +FCC=1,5,0,2,0,0,0,5 fixes it:
>   +FIS:1,3,0,2,1,0,1,2
>   +FCS:1,3,0,2,0,0,0,2
>  and the fax is successfully sent.
> 
>  I sent a report to 3Com, but I doubt they will answer ...

I sent a report concerning this as well, and I agree with you that it's a
firmware bug.  Setting +FCC=,,,,,5 unconditionally is a BAD idea, because
that would mean a large slowdown for all other modems.

(Sounds a bit like they got it wrong AGAIN, using the +FCC setting as an
[numerically] upper limit, not as a *lower* limit -- same problem as with
he max. transmission speed in earlier firmware versions.  Someone should
teach them to read).


I did get a (pretty useless) response already, but I think they definitely 
think they will forward it to engineering.


What about your item "c)" above?  Some explanation, some patch?

gert

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