Re: [hylafax-users] Faxing over VOIP?

["Rob Rothberg" <rrothberg@xxxxxxxxx>]

Again, it might be working well for you, but if you do a large volume of faxes and it's critical to your business, you can't count on 100% reliability.  Tha paragraph below is right out of IAXmodems documentation:

Required network quality

The audio path between the DSP and the PSTN really cannot be over
any sort of a medium that will experience a frequent variance in the
latency. So IAX is okay as long as the network will not "jitter". This
is possible, and is especially possible when talking about a short,
short IAX connection over the loopback device. If you involve any
traditional "VoIP" medium (like an average LAN, WAN, or the internet),
then the likelihood of the medium's variance in the latency will cause
data corruption to occur... and depending on the frequency and timings
of that data corruption will influence the likelihood of that data
corruption causing a fax failure.

On 11/10/06, andrea.lanza@xxxxxxxxxxx <andrea.lanza@xxxxxxxxxxx > wrote:

I am using Hylafax over voip since one year
I am using iaxmodem, virtual iax modem, on an asterisk box .
I am using several iaxmodem (5) on the same box, working together, in at
least 3 different asterisk installation.
Iaxmodem andf hylafax are installed on a different box, not the * box (they
can be the same, anyway)

No problem in sending / receiving faxes
Actually I don't know if it is what you want: this is a way to send/receive
ordinary faxes over voip lines WITHOUT any physical device
It works really fine

Andrea





             "Peter Verhoeven"
             <Peter@morrisint.
             com.au>                                                    To
             Sent by:                  < hylafax-users@xxxxxxxxxxx>
             hylafax-users-bou                                          cc
             nce@xxxxxxxxxxx
                                                                   Subject
                                       [hylafax-users] Faxing over VOIP?
             10/11/2006 00.50








Does anyone have any experience with Hylafax on top of a VOIP line?

I've been testing this succesfully with one line. i.e. take the output
of one of the modems in hylafax, connect it to a VOIP adapter, and it
works fine (faxes succesfully transmit).

I understand that the proper method for doing this is FOIP and uses
different protocol than VOIP. So anyone using true FOIP in conjunction
with Hylafax, I'd certainly be interested in hearing about your setup
too.

The next stage I want to test is 8 simultaneous fax over VOIP lines, and
I'm wondering if any solutions exists to do this without all the
hardware layers. i.e. currently it's hylafax->faxboard->voip
adapter->internet. Is there any way to go hylafax->internet direct?

Thanks,
Peter

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