[Freeswitch-users] Detect T.38 reinvite and transcode?

[Bill W.]

Thanks so much Brian!

Seriously, the whole FreeSWITCH team deserves a big round of applause.
 It's such a pleasure to get the answer "Oh yeah, it already does that".

I documented this in the Wiki too.

For posterity:
<extension name="t38_reinvite">
  <condition>
     <action application="set" data="fax_enable_t38=true"/>
    <action application="set" data="fax_enable_t38_request=true"/>
    <action application="set" data="t38_gateway_format=udptl"/>
    <action application="set" data="execute_on_answer=t38_gateway self"/>
    <action application="bridge" data="sofia/external/1234 at host"/>
  </condition>
</extension>


Aastral Communications
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On 4/14/11 7:04 PM, Brian West wrote:
> that is exactly what t38_gateway does.
> 
> /b
> 
> On Apr 14, 2011, at 5:52 PM, Bill W. wrote:
> 
>> Hi there,
>>
>> Is there a way to have FreeSWITCH detect a T.38 reinvite, accept it, and
>> transcode that into ULAW before sending it on to the B-leg?
>>
>> The fax is neither originated nor terminated on the FS gateway.  FS
>> would simply transcode T.38 to ULAW.
>>
>> I looked at the mod_spandsp documentation and it wasn't readily apparent.
>>
>> To be clear
>> host_a -> FS -> host_b
>>
>> host_a sends an INVITE
>> host_b responds with 100, 180, 200
>> then host_a sends another INVITE with SDP for T.38
>>
>> Can FS ack that RE-INVITE and transcode, so the legs look like this?
>> host_a -> T.38 -> FS -> ULAW -> host_b
>>
>>
>> Thanks!
>> Bill
>>
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> 
> 
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