Colin Anderson wrote:
Why not capture the faxes (in or out) in tiff format, instead of audio
format? Setup your asterisk box to relay faxes!
I think in this case the impact on the client would be much greater if you
can show them a recreation of the image from the raw data; you could always
claim that a TIFF file was altered (which it can be, trivially) but it's
pretty much impossible to change the raw audio to your ends unless you are
in a Tom Clancy novel. I'm watching this thread closely because where I work
there's a lot of "he-said, she-said" over faxes too. If anyone can work out
an example with SpanDSP, please share with the class!
I would have no problem decoding a FAX, doctoring the images, then
creating modified audio from them. During decoding, the FAX modems
produce a channel estimate, so reproducing the characteristics of the
original audio path wouldn't be hard. I think it would be pretty easy to
create fresh audio that no expert could dispute as possibly being the
original.
Steve
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