[Asterisk-Users] rxfax problem

[Andrew Joakimsen]

You are using bad software to view the faxes. In Windows the picture and fax
viewer seems to work fine, however in Linux KGhostView or whever the default
program is does not work, however you should try KFaxView.

Steve: I'm wondering if one day span_dsp will support T38, say we have a SIP
provider that supports T.38 we should be able to recieve a good fax? Right
now the fax is distorted a bit, I think because it does not support ECM?

On 10/20/06, Mohammad Shokuie <shokuie at hotmail.com> wrote:
>
> Hi Steve,
>
> As a matter of fact, you've done a greate job in writting this library, no
> doubts. I really dont know rxgain = 12 makes that much distortion but I'm
> curios to know if I pass through the incoming fax to an analog fax machine
> on another fxs line, the machine wouldn't receive the fax too?
> Anyways, let me take the most benefit as im sure you'd read this post, i
> have problem with the size of received page which is shrinked, can u give
> me
> a hint about this problem too :)
>
> Thanks.
> ---
> M. Shokuie Nia
>
>
> >From: Steve Underwood <steveu at coppice.org>
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> >Discussion<asterisk-users at lists.digium.com>
> >Subject: Re: [Asterisk-Users] rxfax problem
> >Date: Fri, 20 Oct 2006 20:20:18 +0800
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> >
> >M. Shokuie Nia wrote:
> >
> >>Dear folk,
> >>
> >>My problem solved after two day research and try and error method ;). It
> >>was
> >>related to rxgain of the board im using. I've set the rxgain to 12 and
> it
> >>seems made some problem. As far as I got the spandsp is so sensitive
> about
> >>noise on the line and because of that it couldn't hand shake with other
> >>side
> >>well.
> >>
> >>
> >>
> >rxfax isn't sensitive to noise at all. At a gain of 12 you've caused
> >overloading and distortion, and the signal cannot be decoded. Many people
> >seem to be nearly deaf. They run systems at massive gain with awful
> >distortion, and seem content until they find something like a modem or
> DTMF
> >detection doesn't work too well.
> >
> >Steve
> >
> >
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