[asterisk-users] FAX using T38

[Andrew Joakimsen]

OpenPBX.org has better support, due to license issues and politial
bullshit I don't see Asterisk getting T.38 support that isnt a joke
(codec pass-thru?? LOL) for a long time. OpenPBX should have a stable
release within the month, if I am not mistaken they have a Release
Candiate #2 right now....

On 1/20/07, Mehdi chouikh <cmedii at gmail.com> wrote:
> Hello
> Asterisk implement only passtrough T.38, so you cant terminate calls with
> asterisk using T.38.
> You need T.38 gateways.
>
> Regards
>
>
> On 11/13/06, Ricardo Carvalho <rjcarvalho at reit.up.pt> wrote:
> > Dear all,
> >
> > I'm trying to enable Asterisk to work with FAX using T38. I've tried
> > Asterisk 1.2.4 with the available patch found at URL
> > http://bugs.digium.com/view.php?id=5090 and also with the
> new 1.4 Beta3
> > that is announced to support it too.
> >
> > With both Asterisk versions, I've sent with success FAXes between two
> > FAX machines each one attached to an ATA interface, both registered in
> > Asterisk. Although I can't send FAXes to PSTN using T38. The problem, as
> > far as I know, might be assigned with the "Content-Length" shown in the
> > message header of every SIP message negotiating T38 parameters. I've
> > observed that after leaving Asterisk, the Content-Length of every
> > message carrying T38 parameters gets shorter than truly is, and
> > contrarily to my ATAs that seem to don't care about this, my Telco
> > analyses the packet length written in this messages and truncates them,
> > aborting the call.
> >
> > Does anyone experienced this too? Any ideas besides editing the
> > chan_sip.c code to fix this problem?
> >
> > Thanks,
> > Ricardo.
> >
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