Re: [hylafax-users] Some errors in reception

[Fernando <fernando.alhambra@xxxxxxxxx>]

Sorry for the late response, I've been out of the office all this time.

In my modem config files there is not a parameter like this, so I
assume that the value used is the default one. Am I right?

Which one should I used to avoid this and sending only a copy of the
fax sent? I am a little confuse.
With 'retransmit' only send the page again when the receiver send the
RTN signal?

Thank you very much.


2007/3/16, Aidan Van Dyk <aidan@xxxxxxxxxxx>:
> * Fernando <fernando.alhambra@xxxxxxxxx> [070316 07:23]:
>
> > Anyone can tell me while HylaFAX said: Your job to XXXXXXXXX was
> > completed successfully and we have not received the correct document?
> > I usually send about 200 faxes or more every day and I've got only one
> > or two errors like this.
>
> From your session log:
> > mar 14 12:45:58.35: [31762]: SEND recv RTN (retrain negative)^M
> > mar 14 12:45:58.35: [31762]: SEND FAX (000000593): FROM user1@xxxxxxx TO XXXXXXXXX (page 1 of 1 sent in 0:37)^M
> > mar 14 12:45:58.35: [31762]: SEND FAX (000000593): FROM user1@xxxxxxx TO XXXXXXXXX (docq/doc557.ps;01 sent in 0:37)^M
>
> I would look at the setting of RTNHandlingMethod in your device config
> file.  My guess is ithat it's set to Ignore?
>
> From the 4.3.2 man page:
>        http://www.hylafax.org/man/4.3.2/hylafax-config.4f.php
>
> RTNHandlingMethod       string  Retransmit-Ignore       RTN signal handling method
>
>
>
> RTNHandlingMethod
>
>   Specifies how to react to an RTN signal received from the remote: one
>   of '' Retransmit '', '' Giveup '','' Ignore '', or ''
>   Retransmit-Ignore ''.
>
>   '' Retransmit '' assumes that the page is not received succesfully.
>   HylaFAX will make up to two additional attempts to send the page,
>   decreasing signalling rate and retraining. If RTN continues, up to 2
>   additional calls will be placed. The downside is that if the remote
>   always responds with RTN, the page will be sent 9 times and no
>   following pages will be sent. Many fax machines will not behave this
>   way, although T.30 specification seems clear that this is the intent
>   of the RTN signal.
>
>   Many fax machines will interpret RTN as meaning to not send the same
>   data again. That is because RTN may indicate problems with flow
>   control, incorrectly encoded T.4 data, or some incompatibility other
>   than line noise. Fax machines that interpret RTN this way will
>   disconnect and require a manual retransmission. This ''over and out''
>   behaviour can be activated by the '' Giveup '' value. The advantage
>   to this behavior is that the same page of image data will not be sent
>   multiple times, but the downside is that the following pages will not
>   be sent.
>
>   '' Ignore '' is similar to '' Giveup '' in that it makes the
>   assumption the data cannot be automatically accepted by the receiver.
>   However, rather than disconnecting the page of image data is
>   abandoned and processing moves on to the next. The remote is left to
>   decide what to do with the unacceptable page of image data. The
>   downside to this behavior, is that the remote may or may not have
>   kept the page, depending on its interpretation of the RTN signal -
>   but it does allow us to continue on to the next page.
>
>   '' Retransmit-Ignore '' is a combination of '' Retransmit '' and ''
>   Ignore ''. The page of image data is retransmitted up to two
>   additional times, but rather than disconnecting after a third RTN
>   signal for the same page, processing then continues on to the next
>   page. This approach is an effort to satisfy both interpretations of
>   an RTN signal. It allows the receiver to hopefully receive a better
>   copy of the image data while not failing to send subsequent pages. If
>   the receiver saves or prints a copy of pages for which it transmits
>   RTN, then it could save or print up to three copies of every page.
>
>
>
> --
> Aidan Van Dyk                                             Create like a god,
> aidan@xxxxxxxxxxx                                       command like a king,
> http://www.highrise.ca/                                   work like a slave.
>
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--
FAP

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