Symmetric NAT query

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Sourav Chakraborty wrote:
> Hi Benny,
> 
> Thanks for your clarification for TURN usage.We here are of opinion that 
> UDP based media can be sent through symmetric NATs(in case where one end 
> point or both are behind symmetric NATs),only by using TURN.Is our 
> opinion appropriate?

I think even if A is behind a symmetric NAT, media can still flow 
end to end depending on the type of B's NAT. As long as NAT B is not 
symmetric or port dependent mapping/filtering, direct media (without 
relay) could be possible.

cheers,
  -benny


> Waiting for your answer.We have to taken some major decisions based upon 
> your reply.
> 
> Thanks and Regards
> Sourav
> 
> carycui wrote:
>  > Hi:
>  > 
>  >   PJSIP's ICE stack does not implement TURN, I think you need to
>  > implement TURN based on the current ICE stack yourself.
> 
> FYI we have ICE+TURN scheduled in the next release
> (http://www.pjsip.org/trac/milestone/release-0.9.0 
> <http://www.pjsip.org/trac/milestone/release-0.9.0>), so just be
> patient. ;-)
> 
> cheers,
>  -benny
> 
> 
>  > Regards
>  > CaryCui
> 
> 
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> 
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-- 
Benny Prijono
http://www.pjsip.org




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