[asterisk-users] Fwd: Re: Asterisk T.38 Pass-Through doesn't work

[Zoltán Fekete]

Hi!

I have exactly the same problem on asterisk 1.8.22.0  and also on separate
11.2.1 when sending fax to PSTN.
Tryed with spa-3102, spa-2102, Patton Smartnode 4634, and Zoiper softphone.
SpanDsp also works without any problem on my box.

As I remember it was a bug in 1.8.1.x that the a=T38MaxBitRate paramater
was sent as "maxBitRate". Without capital "M".

Are you closer to the solution?
I have tryed almost anything and I don't understand why sends the
T38MaxBitRate:2400 parameter.

regards,

Blaxy

> On 06/03/2013 05:03 PM, Larry Moore wrote:
> > Have you checked the installed version of firmware against the latest
> > available from Cisco?
> Oh! I didn't guess to check. The firmware was not fresh, but upgrading
> doesn't help.
> > Looking at your SIP information when your ITSP initiated a T.38
> > session it did not indicate a maxmimum bitrate, it would appear your
> > spa112 attempted to negotiate a connection at 2400bps.
> Whether there is a way to force my provider to indicate maximum bitrate?
> > Do you have a sip debug session when you sent a fax from your Asterisk
> > box to the PSTN, it would be interesting to see if it sends it as a
> > t.38 or reverts to G711 audio.
> I have collect a set of debugs (with fresh SPA112 firmware) and actual
> config files:
>
> == spa112 — cmd ReceiveFax
> https://gist.github.com/anonymous/5701032
>
> == cmd SendFax — PSTN
> https://gist.github.com/anonymous/5701150
>
> == spa112 — PSTN
> https://gist.github.com/anonymous/5701207
>
> == sip.conf
> https://gist.github.com/anonymous/5701231
>
> == udptl.conf
> https://gist.github.com/anonymous/5701247
>
>
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