Using a media relay is the solution for your problem. You are asking for a 
solution to not use the solution which makes no sense.

Adrian
 
On Feb 25, 2013, at 7:24 PM, Roberto Spadim wrote:

> humm i got the same problem but didn't found a solution
> my solution was connect internet (public ip) directly to voip server, in 
> other words, i removed the opensip proxy and ntpproxy, but if anyone have the 
> solution could be very nice, i googled many examples but they don't work
> 
> 
> 2013/2/25 Muhammad Shahzad <shaherya...@gmail.com>
> You are missing one fundamental fact, that is you have to handle NAT for both 
> signalling and media. From your description it looks signalling is going 
> perfect (NAT is correctly handled), since you are able to establish call 
> between two clients successfully, clients can register, make call, accept 
> call and hangup call with your server. So main goal of NAT Traversal module 
> is achieved. 
> 
> However, there is no media on call, so media NAT is not handled. NAT 
> Traversal and / or NAT Helper modules may try to fix media NAT issues as well 
> by manipulating SDP but in so many case they will be simply NOT enough for 
> this purpose. Especially in case of 3g and corporate networks, which may have 
> very very complex network typology with multiple layers of NAT (so called 
> Nested NAT). So rtp / media proxy is the ONLY solution that can handle media 
> across such complex networks.
> 
> If you have really good sip clients with support for STUN / TURN / ICE etc. 
> and you somewhat control over client data network environment, them you may 
> fix media NAT issues up to 90% but in about 5-10% cases you will still need a 
> media relay.
> 
> Thank you.
> 
> 
> On Mon, Feb 25, 2013 at 11:51 PM, leo <uzcud...@yahoo.it> wrote:
> Hello,
> 
> Unfortunately after reading the forum i've to open a new post about NAT
> because i couldn't find a clear solution and information for my problem.
> I've also read the NAT Traversal module documentation.
> 
> I've an OpenSIPS server (version 1.8.2) on a Debian system (6.0.7 -
> 2.6.32-5-686).
> OpenSIPS was installed by the apt-get install using the apt.opensips.org
> repository and configured with osipsconfig (residential script with ALIASES,
> AUTH, DBACC, DBUSRLOC and DIALOG).
> 
> The UAs can register to the OpenSIPS server. They can place the call but i
> 've no audio no video.
> The OpenSIPS server has a public IP address (so, no natted).
> The UAs could be natted or with public ip thru 3G.
> 
> I wouldn't like to use rtproxy or mediaproxy cause the rtp traffic would be
> passing by those servers (am i correct?) adding jitter and latency.
> I would set up the system in the way the the rtp traffic would be P2P. Would
> NAT Traversal be the solution? How it should be configured (i've already
> enabled the required modules too)?
> 
> Thanks a lot.
> 
> Leo.
> 
> 
> 
> --
> View this message in context: 
> http://opensips-open-sip-server.1449251.n2.nabble.com/NAT-tp7584918.html
> Sent from the OpenSIPS - Users mailing list archive at Nabble.com.
> 
> _______________________________________________
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> 
> 
> -- 
> Muhammad Shahzad
> -----------------------------------
> CISCO Rich Media Communication Specialist (CRMCS)
> CISCO Certified Network Associate (CCNA)
> Cell: +49 176 99 83 10 85
> MSN: shari_78...@hotmail.com
> Email: shaherya...@googlemail.com
> 
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> 
> 
> 
> 
> -- 
> Roberto Spadim
> SPAEmpresarial
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