[Users] Mediaproxy with t38

[Nathan Hawkins]

I believe T.38 uses UDPTL instead of RTP. So you'd need support for it
in mediaproxy for it to work.

Kristian Kielhofner wrote:
> Daniel-Constantin Mierla wrote:
>> Hello,
>>
>> you should not do anything special for t38, from proxy's point of
>> view, does not matter the content of media stream. For the fax
>> relaying, you should make sure that you handle re-INVITEs properly.
>>
>> Cheers,
>> Daniel
>>
>
> Daniel,
>
>     I'm having the same problems with T38, between a Sipura 2100 and
> Cisco AS5350XM.  Everything works quite well unless there is NAT. 
> When the Sipura is behind NAT I can make voice calls but T38 faxing
> fails.  Isn't a Re-Invite just an INVITE within an existing SIP
> session?  What special configuration/processing does it require?  I'm
> really curious about this...
>
> Thanks!
>
> -- 
> Kristian Kielhofner
>
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