[OpenSER-Users] STUN working!!

Hello everybody, To remind you, I'm trying to set a SIP architecture for NATTED SIP users without using any rtp proxy (because of lack of ressource). STUN is working very well between 2 users in 2 differents NATs. But when they are behing the same NAT, they cannot reach the other.. In the INVITE and 200Ok SDP fields, they have put their public address with a port reserved with STUN: it's not working! I think that it is because it's difficult for them to reach the public IPaddress/port where they should send the RTP stream from inside the NAT. So my idea was: Why not rewriting SDP fields to put their private address when they are behind the same NAT But I don't know how to rewrite the SDP fields for both users. (I have the private address of both users in the location database) Help would be very grateful... If you have any idea! Best Regards