[Freeswitch-users] SIP to TDM t38 gateway

[Alex Crow]

Hi Spencer,

I use this (gatewaying via a Mitel 3300 but there is no reason why it 
would not work for FreeTDM, just change the bridge at the end).


       <action application="set" data="absolute_codec_string=PCMU"/>
       <action application="set" data="fax_enable_t38=true"/>
<action application="set" data="sip_execute_on_image=t38_gateway self 
nocng"/>
       <action application="bridge" data="sofia/gateway/10.10.0.2/$1"/>


Hope this helps if a bit late.

Cheers

Alex

On 05/11/12 21:32, Spencer Thomason wrote:
> Hello,
> I'm trying to use Freeswitch as a SIP to TDM gateway.  I'd like to use t38_gateway to detect fax tones and send a ReINVITE to t38.
>
> Have a very minimal config with one profile that simply relays to FreeTDM
>
> My dialplan is:
> <include>
>    <context name="sip">
>
>      <extension name="dial-trunk">
>        <condition field="destination_number" expression="^(.*)$">
>          <action application="set" data="fax_enable_t38=true"/>
>          <action application="set" data="fax_enable_t38_request=true"/>
>          <action application="set" data="execute_on_answer=t38_gateway self"/>
>          <action application="bridge" data="freetdm/1/a/$1"/>
>        </condition>
>      </extension>
>
>    </context>
> </include>
>
> The problem is a media bug is created on the channel but almost immediately destroyed so fax tones are never detected.
>
> See:
> http://pastebin.freeswitch.org/20162
>
> Thanks for any assistance,
> Spencer
>
>
>
>
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