If you don’t use STUN and when using ICE, media will go directly between 
end-points behind the same NAT. The rest of the calls will go through media 
relay.

Adrian

> On 19 Oct 2015, at 11:03, Nabeel <nabeelshik...@gmail.com> wrote:
> 
> ICE in general uses STUN (RFC 5245), however I do not use Mediaproxy myself 
> so cannot comment on how it handles STUN.   Someone with Mediaproxy may be 
> able to answer.
> 
> On 19 Oct 2015 14:41, "Rodrigo Pimenta Carvalho" <pime...@inatel.br 
> <mailto:pime...@inatel.br>> wrote:
> Ok Nabeel.
> 
> 
> In my environment, I intend to have MediaProxy and all clients supporting ICE.
> 
> However, in my environment/network doesn't exist a STUN server.
> 
> 
> So, my last questions (before I start the MediaProxy installation procedures) 
> about this subject are:
> 
> 
> 1 -  Does MediaProxy work as a STUN server, or just as a TURN server?
> 
> 
> 2 - Is it always necessary to provide a STUN server separately, even using 
> the MediaProxy, if direct media is desired?
> 
> 
> 3 - Let's suppose I will not provide a separately STUN server, in this case 
> will the media always pass through the media relay,?
> 
> 
> Thank you again!
> 
> Best regards.
> 
> 
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
> 
> 
> De: users-boun...@lists.opensips.org 
> <mailto:users-boun...@lists.opensips.org> <users-boun...@lists.opensips.org 
> <mailto:users-boun...@lists.opensips.org>> em nome de Nabeel 
> <nabeelshik...@gmail.com <mailto:nabeelshik...@gmail.com>>
> Enviado: segunda-feira, 19 de outubro de 2015 10:40
> Para: OpenSIPS users mailling list
> Assunto: Re: [OpenSIPS-Users] Does Media_Relay component implies in 
> impossible direct media?
>  
> Yes, that is how it should work.  ICE tries to connect directly first before 
> trying other methods.  If direct connection fails, then it tries STUN, then 
> media relay.  The clients have to support ICE too.
> 
> On 19 October 2015 at 11:35, Rodrigo Pimenta Carvalho <pime...@inatel.br 
> <mailto:pime...@inatel.br>> wrote:
> Hi Nabeel.
> 
> 
> Thank you very much for your answer.
> 
> If I understood it well, while using MediaProxy, the clients may connect 
> directly, but they may not too. ICE will decide it for me and I don't need to 
> worry about it.
> 
> Tell me if I got it, please.
> 
> 
> Best regards.
> 
> 
> 
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
> 
> 
> De: users-boun...@lists.opensips.org 
> <mailto:users-boun...@lists.opensips.org> <users-boun...@lists.opensips.org 
> <mailto:users-boun...@lists.opensips.org>> em nome de Nabeel 
> <nabeelshik...@gmail.com <mailto:nabeelshik...@gmail.com>>
> Enviado: sábado, 17 de outubro de 2015 19:56
> Para: OpenSIPS users mailling list
> Assunto: Re: [OpenSIPS-Users] Does Media_Relay component implies in 
> impossible direct media?
>  
> Rodrigo,
> 
> It is the responsibility of ICE to determine in which situation it is best to 
> establish a direct connection, versus use of STUN, versus use of a media 
> relay.
> 
> We cannot manually decide which clients will connect directly and which will 
> not.
> 
> On 17 Oct 2015 22:07, "Rodrigo Pimenta Carvalho" <pime...@inatel.br 
> <mailto:pime...@inatel.br>> wrote:
> 
> Hi.
> 
> 
> In my project, UACs should run direct media. RTP packets direct transmitted 
> from each other.
> 
> However, due to NAT presence, I'm thinking about to use MediaProxy. 
> 
> 
> In this case, is it possible to get direct media after some UAC negotiations 
> passing through the Media_Relay component, or is it impossible? That is, does 
> the media will always pass through the Media_Relay host too?
> 
> 
> Any hint will be very helpful!
> 
> Thanks alot.
> 
> 
> 
> 
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 <tel:%2B55%2035%203471%209200> RAMAL 979
> 
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