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

jay binks jaybinks at gmail.com
Thu May 2 02:35:33 MSD 2013


So what would one put in sip_execute_on_image
to make FS knock back a T38 Re-invite ? :)

Respond with an SDP, with no T38 I guess..


On 1 May 2013 01:28, Anthony Minessale <anthony.minessale at gmail.com> wrote:

> 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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>>
>> 
>> 
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>>
>
>
> --
> Anthony Minessale II
>
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>
> 
> 
>
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-- 
Sincerely

Jay
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