[Freeswitch-users] T38 Re-INVITE: FS responds 100 Trying, nothing further happens

[Anthony Minessale]

The variable is sip_execute_on_image



On Tue, Apr 30, 2013 at 5:35 AM, Örn Arnarson <orn at arnarson.net> wrote:

> Hello,
>
> I'm trying to get T38 gatewaying to work. I have a call coming in with FAX
> audio, and an endpoint that needs T38. The endpoint will send a T38
> re-invite, to which FS responds 100 trying, and after 40 seconds the
> endpoint will give up (citing stale 100 trying).
>
> I set these variables before briding:
> <action application="set" data="fax_enable_t38=true"/>
> <action application="set" data="fax_enable_t38_request=true"/>
>
> And then I bridge like this (dialstring is sofia/profile/number at ip:port):
> <action application="bridge" data="{execute_on_image=t38_gateway self
> nocng}${dialstring}"/>
>
> I've tried all variants I can think of, and always have the same result,
> except for when fax_enable_t38 = false, in which case FS rejects the
> re-invite.
>
> I found some old discussions on the mailing list alluding to the same
> problem, but not much in the way of solutions.
>
> Can anybody give me a pointer as to what I'm doing wrong? I was running a
> git clone from 1.2.2, but I upgraded to latest stable (1.2.7) with the same
> results.
>
> Here's what happens in FS. At the very end you can see the Re-INVITE, and
> then nothing happens post that point.
> http://pastebin.freeswitch.org/20853
>
> Best regards,
> Örn
>
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-- 
Anthony Minessale II

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