[Freeswitch-users] t38-passthru sofia param

[David Ponzone]

You need to enable t38-passthru when you want FS to forward the T38 reinvite from a leg to anothern.

David Ponzone  Direction Technique
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Le 30/06/2011 à 21:25, Spencer Thomason a écrit :

> Just a quick follow up.  The fact that the reINVITE wasn't being passed correctly across the bridge was pilot error.. I had enable-soa=false on the profile.  I am however a little confused as when to use the t38-passthru parameter.    Is it needed even when doing bypass media or proxy media?
> 
> On Jun 30, 2011, at 11:40 AM, Spencer Thomason wrote:
> 
>> Hello all,
>> I have a few questions regarding the t38-passthru sofia param.  One of the ways we are using FreeSWITCH is as a simple B2BUA in our SBCs.  The topology looks like this:
>> 
>>                                            Freeswitch
>>                                               /\          \/
>> FS and Asterisk boxen -> OpenSIPS -> PSTN
>> 
>> The Freeswitch instance is setup with inbound late negotiation and bypass media = true and the dialplan consists of a very simple bridge statement that sends a call back to the proxy.  
>> 
>> The problem is that when someone sends a fax and the GW send a t.38 reINVITE, Freeswitch is sending the original SDP (PCMU in this case) back to Leg A and the fax then fails using PCMU.  Is this parameter needed when bypass media is already enabled?
>> 
>> Thanks,
>> Spencer
>> 
>> 
>> 
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