Re: [hylafax-users] Fax gets resent three times

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2004.02.19 14:26 Joshua Burley wrote:
> Thanks for all of your great info, Lee...
>
> I've gone through the data that is being sent, and can't see anything
> wrong
> with the files that are not getting past the first page (there isn't
> much
> different between them and the ones that go through successfully).
> And, they're
> all plain text documents.

Well, that's how they start, but they fax as TIFF data, so it's pretty 
much irrelevant how they start.

> You said that the problem might be with the timing of the data and
> preceding
> signals. Any suggestions as to how I could debug and fix something
> like that?
> Where to start looking?

You still havent told me if they are getting the full first page of 
image data or not.

If they are not getting any image data (i.e., no page at all or just a 
blank page) then the problem probably lies with the timing of 
Class1SendMsgDelay.  It defaults at 200 ms.  Increasing it to as much 
as 500 ms may resolve the matter.  Hopefully it does not impair 
communications with other systems.  You could also try reducing it, but 
that's not likely to help.

If they are getting a partial page of image data (i.e., an inch or two, 
but then it stops), then there could be a problem with the TIFF image 
data that is being sent or the modem could have problems with that 
particular data modulation carrier.  But in this case it's probably not 
fixable with configuration changes.

If they are getting the full page of image data, then the problem 
probably lies with the timing of Class1PPMWaitCmd which defaults to 
AT+FTS=7.  You could probably increase this to AT+FTS=9 or AT+FTS=10 
without any ill effects.  Maybe that would fix it.

Lee.

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