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

[Joshua Burley <jburley@xxxxxxxx>]

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.

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?

It's still so strange, because most of the outgoing faxes are fine, but there
are some users that *always* get these "triplicates". I also checked to see
if those complaining about triplicates are all using the same brand of fax
machine (or something), but that didn't seem to be part of the problem.

Thanks again!
.josh


> On 2004.02.18 13:24 jburley-spam@xxxxxxxx wrote:
> > I'm trying to verify that now... but the people involved are
> > out-of-state.
> > 
> > In the log posted (and in your reply), it looked like "SEND end page"
> > was
> > sent,
> 
> "SEND end page" is just a logging message.  The corresponding TIFF data 
> is the RTC code (theoretically optional in faxing) followed by DLE+ETX.
> 
> > and that perhaps the other end hung up after the first page, and
> > 
> > didn't wait for additional pages?
> 
> That's possible, but highly unlikely.  That behavior would violate T.30 
> (fax) protocol.  The receiver should at least send DCN (disconnect 
> signal).  More likely is that the remote receiver is having problems 
> with the data or with the timing of that data and preceding signals.
> 
> > If this is the case, is it a problem
> > with
> > the way the "number of pages" is sent?
> 
> The "number of pages" is never communicated.  There is no "number of 
> pages" communication in fax protocol.  The receiver is supposed to wait 
> for the "this is the last page" signal called EOP.  Your logs indicate 
> that the "this is not the last page" signal, called MPS, was sent.
> 
> Lee.
> 
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