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

[Andrey Polovov]

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