[Asterisk-Users] T.38 Faxing

[Roger Schreiter]

Lee Howard schrieb:
> ...
> See:  https://sourceforge.net/projects/iaxmodem/


Hi,

great! I googled a lot, before we started our project.
A iaxclient which works as modem (aka tty device) would
be great.

Do you think, one can connect a hylafax server to
iaxmodem?

Yes, I know, that jittering will be a problem and will
make necessary some buffering, but not too long, ...

Well, we will proceed the project anyway, to
see, whether it is possible or not.

We have a lot of clients, reporting, that faxing through
our asterisk gateway works very well. Our clients are
VoIP providers, thus the typical setup is:

fax <-analog-> ATAbox <-SIP-> asterisk1 <-IAX->
    asterisk2 <-PSTN-> remotefax

or
asterisk1_with_spandsp <-IAX-> asterisk2 <-PSTN-> remotefax

asterisk1 is the machine of the providers, which use our
termination service.
asterisk2 is our gateway.


We have one customer, whose customers are SOHOs with typical
small PBXs, supporting 2 or 4 lines. He now puts the FritzboxFon
between PSTN and their PBXs, in order to take the outbound
phone traffic via VoIP, including fax. He is using as internet
connectivity KabelBW, a regional cable TV provider.

His setups are success stories.


Thus, I assume, IAX and the jitter won't be the problem, when
the internet connectivity is good enough.


Well, we'll proceed our tests and see.

Roger.