Re: [hylafax-users] Faxes received with error

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Vágó István wrote:
> I having problem with faxes received from some fax peers. These faxes
> received with the following error message. The error is only received after
> the last page of these faxes. The received image otherwise looks fine. But
> because the fax was not confirmed, these clients try to send them again and
> again until it come over without the error (three or more times). Is there
> any solution to overcome this error?
>
> Dec 17 12:53:05.37: [ 4686]: --> [20:+FPS:2,2880,9240,2,0] 
> Dec 17 12:53:05.38: [ 4686]: --> [6:+FET:2] 
> Dec 17 12:53:05.38: [ 4686]: RECV recv EOP (no more pages or documents) 
> Dec 17 12:53:05.38: [ 4686]: --> [2:OK] 
> Dec 17 12:53:05.38: [ 4686]: RECV send RTN (retrain negative) 
> Dec 17 12:53:05.38: [ 4686]: <-- [7:AT+FDR\r] 
> Dec 17 12:53:08.03: [ 4686]: --> [5:ERROR] 

It's a discrepancy between the sender and your HylaFAX configuration 
with regards to what the RTN signal means and how to handle it.

Your modem, operating in Class 2.0, detected too many errors in the 
image data sent by the sender.  Therefore it is signaling RTN (reject 
page quality, retrain before next page) to the sender.

There is no perfect consensus among fax machine manufacturers and fax 
softwares and fax modems with respect to how such a case should be 
handled.  HylaFAX interprets this as meaning that the page should be 
resent.  Some senders treat RTN as a confirmation of sorts.  Some 
senders will hang up and others will not.  Still others are not capable 
of resending the page without first hanging up and requiring the user to 
physically re-insert the page into the fax machine.

You can review the hylafax-config man page:

http://hylafax.sourceforge.net/man/hylafax-config.php

... for "BadPageHandlingMethod" and "RTNHandlingMethod" for some more 
information about this issue.  However, my advise to you is to switch to 
Class 1 (and if your modem doesn't support it then to get a modem that 
does) and you'll largely do away with this concern because of the 
addition of ECM support you'll get from Class 1.

Thanks,

Lee.


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