@Daniel, how can the SIP proxy determine whether to use rtpproxy or not ?
On Sun, Mar 3, 2013 at 11:58 PM, Daniel-Constantin Mierla <mico...@gmail.com > wrote: > Hello, > > stun works pretty well for non-symmetric nat. If there is symmetric nat, > then you need a rtp relay (e.g., rtpproxy) or turn server. > > Cheers, > Daniel > > > On 2/28/13 5:48 PM, Khoa Pham wrote: > > Hi David, I already read all of these. But the problem seems contradict > with what I read > > > On Thu, Feb 28, 2013 at 9:56 PM, David <kamailio....@spam.lublink.net>wrote: > >> Hello, >> >> Look on Wikipedia and read the articles for SIP, RTP, NAT and STUN. >> >> The answer to your question can be found in the above articles. >> >> David >> >> >> On 13-02-27 10:26 PM, Khoa Pham wrote: >> >> Hi, I have Kamailio as SIP server and RTP server. Client is PJSIP. >> >> I read that STUN is for non-symmetric NAT, and RTP server is for >> symmetric NAT. >> >> Supposed A calls B. >> >> If A, B both use symmetric NAT and STUN, they cannot hear each other >> If A or B use non-symmetric NAT and NOT using STUN, they cannot hear >> each other. >> >> Why is that? >> >> I read >> http://tools.ietf.org/id/draft-takeda-symmetric-nat-traversal-00.txt for >> Prediction >> Failure, is that related to this problem ? >> >> -- >> Khoa Pham >> HCMC University of Science >> Faculty of Information Technology >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing >> listsr-us...@lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users@lists.sip-router.org >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> >> > > > -- > Khoa Pham > HCMC University of Science > Faculty of Information Technology > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing > listsr-us...@lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > > -- > Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda > - http://www.linkedin.com/in/miconda > Kamailio World Conference, April 16-17, 2013, Berlin > - http://conference.kamailio.com - > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- Khoa Pham HCMC University of Science Faculty of Information Technology
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