@Daniel Thanks for reply. But do you know what affects Kamailio in deciding whether to rewrite c= or not ?
On Sun, Mar 3, 2013 at 11:42 PM, Daniel-Constantin Mierla <mico...@gmail.com > wrote: > Hello, > > for nat trversal, I suggest you use the default kamailio.cfg from later > versions 3.3.x or upcoming 4.0. Read the comments at the top of the file -- > practically the routing logic for nat traversal is surrounded by WITH_NAT > define. > > o= line is not used for rtp relaying, but some clients expect to be the > same as c=, at that moment it should be rewritten (or better rewrite it > always to be sure that is not the reason of some no-audio problem). > > Cheers, > Daniel > > > On 3/1/13 12:47 PM, Khoa Pham wrote: > > Hi, I mistype. What I want to know is what affects Kamailio decision in > rewriting c= in SDP. > > In http://kamailio.org/docs/ser-getting-started/SER-GettingStarted.pdf, > I see that > > if (isflagset(6)) { > force_rport(); > fix_nated_contact(); > force_rtp_proxy(); > } > > Which means that Kamalio only cares if the caller is behind NAT or not. > > Does it care about caller's symmetric NAT, using STUN, callee's nat type > ? > > > On Fri, Mar 1, 2013 at 10:38 AM, Khoa Pham <onmyway...@gmail.com> wrote: > >> Hi, I read in http://kamailio.org/docs/modules/1.4.x/nathelper.html that >> Kamailio might rewrite ip address in o= in SDP to facilitate NAT >> traversal. >> >> It may decide to use to original IP or use IP of RTP server. What >> factors affect its decision ? >> >> -- >> Khoa Pham >> HCMC University of Science >> Faculty of Information Technology >> > > > > -- > 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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