[Asterisk-Users] Modem and Fax over VoIP

[Andrew Joakimsen]

Fax with G711 works fine. Modem will be slow, but if you really need to
use it slown them down to 28.8 or 33.6

> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com [mailto:asterisk-users-
> admin at lists.digium.com] On Behalf Of Eduardo Goncalves
> Sent: Monday, October 06, 2003 2:56 PM
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] Modem and Fax over VoIP
> 
> On Mon, 06 Oct 2003 13:43:21 -0500
> Steven Critchfield <critch at basesys.com> wrote:
> 
> > On Mon, 2003-10-06 at 10:12, Eduardo Goncalves wrote:
> > > Hello,
> > >
> > > 	I have the fowling scenario:
> > >
> > > fxs[asterisk1]-----iax-----[asterisk2]e1----e&m---PSTN
> 
> >
> > If asterisk2 is your only access to the PSTN, then it doesn't make a
lot
> > of sense to do fax over VoIP. Put a couple of modems on asterisk2
with
> > matching FXS ports and learn to use Hylafax.
> 
> 	I can't. Because asterisk1 is at a remote site. And the only
access
> to PSTN at this remote site is trough asterisk2.
> 
> > performance out of the faxing and potentially lower bills. Also it
is
> > more flexible. Not to mention that the bandwidth over VoIP to make
data
> > quality calls is around 80k of VoIP to get flakey 9.6k. Do you need
to
> > waste 10x bandwidth for sub par functionality?
> 
> 	Is it possible to config asterisk1 to change to g.711 only when
a
> fax transmission is detected?
> 
> Thanks
> Eduardo
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