[OpenSIPS-Users] NAT - Unable to solve RTP Problem

[Flavio Goncalves]

Hi Jens,

Stun does not work over symmetrical nat. Please use an utility called
winstun and test the firewall/nat traversal of your clients. If they are
symmetric, the only way is rtpproxy. Rtpproxy does not work behind a
firewall without a patch.  The scenario you are trying to create is not an
easy to do with both clients and servers behind NAT. If rtpproxy is
consuming 99.9% of CPU something is wrong or you have a high number of
simultaneous calls. You can also try mediaproxy from AG-projects.

Flavio E. Goncalves


2013/6/22 Jens Sauer <sauer.jens at yahoo.de>

> Hello,
>
> since a month i try to solve my rtp problem. I´m quite new to OpenSips but
> i want it to be running on my Server.
>
> Both Phones (phonerLite) are connected and each one could call the other
> one, the only Problem is - no voice!
> Could someone please give me a hint, on using the right module (and
> parameter) to solve the problem. The Screenshot shows my topology. Both
> Clients use a public stun Server. I tried to use the rtpproxy but this
> piece of code use 99% of my CPU - there must be a different way.
>
> Thanks for any help.
>
> Jens
>
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