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

[Larry Moore]

On 22/07/2013 5:40 AM, Zoltán Fekete wrote:
>
> 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.
>

Could it be because the remote endpoint does not supply the 
T38MaxBitRate attribute in its reply which then leads to Asterisk 
applying the Minimum Rate to your ATA!?

I am referring to the information around lines 403 & 404 of 
https://gist.github.com/anonymous/5701207.

Do you know what the Fax Rate was for the connection in 
https://gist.github.com/anonymous/5701150.

What happens if you insert in your dialplan something like

Set(FAXOPT(minrate)=4800)

Cheers,

Larry.