asterisk users - Jun 2005 - Re: FXO as modem (was: * fax reliability between ISDN PRI andFXS ports)

Hi Andrew,

Andrew Kohlsmith wrote:
>
> On Monday 27 June 2005 00:34, Jerry wrote:
>> Question: There are problems using FXS ports to pass data and get high
>> speed access, but can an FXO port be used as a modem? Nothing fancy
>> required, 12 or 2400 baud should be ok (9600+ would be nice, but
>> practical
>> over nice). I know there is something like this with the
"FAX" extension
>> already. (Not sure if there is a "DATA" equivelent). Is this
practical?
>> Has anyone done this?
>
> Sure; this is exactly what rxfax/txfax do.  You won't get better than
9600
> baud without running into patent issues, though.
Has anyone actually done this, or is it just theoretically possible? I'm not
very familiar with the capabilities of the hardware, so excuse me if this
is a silly question. I have a basic understanding of how the fax stuff
works, but just from reading docs here and there. (I'm not sure how it works
under the hood, and indeed I've never played with it yet).

I have to ask about the 9600+ patent issues: What are they? I'm just
curious. I'm not interested in using the FXO's as a dialin server or
anything of that nautre, just to get basic access.

Thanks,
J.