[Freeswitch-users] Faxing transcoding issues.

[Mirko Brankovic]

>From my experiance if you send t38 re-invite then FS will expect T38 even
if remote side refuses it.

If you wont to transcode you need to not send the re-invite.

Get the scenario you need form here:
https://wiki.freeswitch.org/wiki/Mod_spandsp#t38_gateway

-mirko

On Thu, Aug 4, 2016 at 10:55 AM, Andrew Cassidy <
andrew at cassidywebservices.co.uk> wrote:

> Good morning all,
>
> I've been playing with faxing and t38 over the last few days. I use a
> wholesale provider who detects and reinvites for t38, and have implemented
> the same in my systems. Passing t38 through unmodified is not an issue.
>
> The issue I do have, is in the event that the sender refuses the reinvite,
> I'd like freeswitch to transcode. In theory, this is set up correctly, but
> see this error message repeated over and over and ultimately the fax fails:
>
> [DEBUG] mod_spandsp_fax.c:1756 sofia/external/xxx at provider.com Error
> decoding UDPTL (172 bytes)
>
> Every other scenario I have worked through is working fine.
>
> For reference, the fax-specific dialplan entries:
>
> <action application="export" data="fax_enable_t38=true"/>
> <action application="export" data="fax_enable_t38_request=true"/>
> <action application="export" data="t38_passthru=true"/>
> <action application="export"
> data="nolocal:sip_execute_on_image=t38_gateway self" />
> <action application="set" data="execute_on_answer=t38_gateway peer" />
>
> Thanks in advance.
>
> --
> *Andrew Cassidy BSc (Hons) MBCS SSCA*
> Managing Director
>
> 03303 880 960 andrew at cassidyweb.co.uk <andrew at cassidywebservices.co.uk>
> www.cassidyweb.co.uk <http://www.cassidywebservices.co.uk>
>
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-- 
Regards,
Mirko
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