Re: flexfax: ZYXEL /U1496EG V 6.19 M Hardware Problem ??

[David Woolley <david@djwhome.demon.co.uk>]

> some pages are sent multiple times, but there is no reguarity. 

That's because something thinks the first transmission was of unacceptable
quality.

> Mar 02 16:41:48.17: [18911]: SEND send MPS (more pages, same document)
> Mar 02 16:42:02.59: [18911]: --> [5:ERROR]
> Mar 02 16:42:02.60: [18911]: SEND recv RTN (retrain negative)

Modem replied ERROR, and hylafax guesses that the remote end sent a
retrain (recalibrate modem) negative (and retransmit page) response.

RTN can be the result of poor quality phone lines, phone lines whose
characteristics change during the transmission (a type of poor quality)
and coding errors in data.

There are patches to fix a coding error associated with tag lines and to
retry such failures at lower speeds.  However, the fact that you get
through on the second attempt suggests that this might be a real line
quality problem.

NB This was an FAQ and should have been answered by an archive search.