Fax connect speeds

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Hi,

On Sun, Dec 06, 1998 at 05:05:36AM +0000, Michael Van Donselaar wrote:
> I've been using two different faxes for testing:  a Canon 9000 Super G3 and an old Sharp 510 (either
> a 9600 or 14400 machine)
> 
> I keep getting 2400 bps connects from both.

Or at least that's what your modem is telling you:

> 12/05 22:32:56 yS1  mdm_send: 'AT+FLID="402 467 1707"' -> OK
> 12/05 22:32:56 yS1  mdm_send: 'AT+FDCC=1,5,0,2,0,0,0,0' -> OK

You're telling the modem "fine mode is allowed, maximum speed 14400", and
the modem accepts it.

> 12/05 22:37:14 yS1  fax_id: '+FTSI: "          4024671707"'
> 12/05 22:37:15 yS1  transmission par.: '+FDCS: 0,0,0,0,0,0,0,5'** found **

The modem reports back something that doesn't really make sense - normal
mode, 2400 bps, but MUCH delay for every scan line in the fax.

> 12/05 22:37:15 yS1  fax_send: 'AT+FDR'
> 12/05 22:37:15 yS1  fax_wait_for(CONNECT)
> 12/05 22:37:20 yS1  transmission par.: '+FDCS: 0,0,0,0,0,0,0,5'** found **
> 12/05 22:37:21 yS1  fax_get_page_data: receiving /var/spool/fax/incoming/fn66a09e4S1-402
> 4671707.01...
> 12/05 22:38:16 yS1  fax_get_page_data: page end, bytes received: 16533
> 12/05 22:38:16 yS1  fax_wait_for(OK)

Let's do some timing math.  

(16533 bytes * 8 bits/bytes) / 55 seconds (37:21 to 38:16) = 2404 bits/sec.

Seems that it's really only doing 2400 bps.  If that is so, your modem
doesn't want to use a higher speed.

Besides this, everything looks pretty good...

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
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