Hi Without rtpproxy or mediaproxy, the both SIP clients have to be reached from Internet, or it has to have the public IP. But in your case, I don't think you can have both client on Internet. Tung From: sr-users-bounces(a)lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of truong ngoc THANH Sent: Tuesday, August 24, 2010 5:24 PM To: Alex Balashov Cc: kamailio Subject: Re: [SR-Users] help to configure RTP stream with NAT. Dear Alex Balashov, thanks for helping i try to disable force_rtp_proxy() in kamailio.cfg.but when i make call, no stream transfer. the call can make but can not hear anything . TRUONG NGOC THANH Telecommunications Engineer Tel: 0984 480 646 Y!M: ngoc217thanh _____ From: Alex Balashov <abalashov(a)evaristesys.com> To: sr-users(a)lists.sip-router.org Sent: Tue, August 24, 2010 4:58:27 PM Subject: Re: [SR-Users] help to configure RTP stream with NAT. On 08/24/2010 05:41 AM, truong ngoc THANH wrote: On calls where you do not want rtpproxy to relay media, just don't use it (don't call force_rtp_proxy())? -- Alex Balashov - Principal Evariste Systems LLC 1170 Peachtree Street 12th Floor, Suite 1200 Atlanta, GA 30309 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Hi Alex Balashov, two clients is behind NAT, when i configure nathelper, the call make ok, but RTP proxy handle media stream, I want to make media stream go direct from sip client to another. so is there any solve ? TRUONG NGOC THANH Telecommunications Engineer Tel: 0984 480 646 Y!M: ngoc217thanh ________________________________ From: Alex Balashov <abalashov(a)evaristesys.com> To: truong ngoc THANH <ngoc217thanh(a)yahoo.com> Cc: kamailio <sr-users(a)lists.sip-router.org> Sent: Tue, August 24, 2010 5:41:34 PM Subject: Re: [SR-Users] help to configure RTP stream with NAT. In that case, there is a network or transport-layer reachability issue between the two clients. On 08/24/2010 06:24 AM, truong ngoc THANH wrote: -- Alex Balashov - Principal Evariste Systems LLC 1170 Peachtree Street 12th Floor, Suite 1200 Atlanta, GA 30309 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/

hi, my diagram is : sip client <--> nat <--> kamailio server <--> nat <--> sip client (something like that). you said that i can use "RTP tunnel solution"(as RtpProxy ?). I hope that kamailio handle signaling protocol and media stream go direct from sip client to another . thanks for help. TRUONG NGOC THANH Telecommunications Engineer Tel: 0984 480 646 Y!M: ngoc217thanh ________________________________ From: Iñaki Baz Castillo &lt;ibc(a)aliax.net&gt; To: truong ngoc THANH &lt;ngoc217thanh(a)yahoo.com&gt; Cc: Alex Balashov &lt;abalashov(a)evaristesys.com&gt;om>; kamailio &lt;sr-users(a)lists.sip-router.org&gt; Sent: Thu, August 26, 2010 5:02:37 AM Subject: Re: [SR-Users] help to configure RTP stream with NAT. 2010/8/24 truong ngoc THANH &lt;ngoc217thanh(a)yahoo.com&gt;om>: Same NAT or different NAT? STUN / ICE in both endpoints. If not, you need a RTP tunnel solution (as RtpProxy). Magic doesn't exist. -- Iñaki Baz Castillo &lt;ibc(a)aliax.net&gt;