Hi, you cannot use add_path(), but by creating your own Path header this works, e.g.: append_hf("Path: <sip:term@HOSTNAME:"+PORT+";lr>\r\n"); (from our P-CSCF config) Then your Proxy should also evaluate the DNS-SRV records. Kind regards, Carsten -- Carsten Bock CEO (Geschäftsführer) ============================================================= Die ng-voice GmbH ist auf der Kamailio World 2013, 16./17. April 2013 => http://conference.kamailio.com/k01/========================================… ng-voice GmbH Schomburgstr. 80 D-22767 Hamburg / Germany http://www.ng-voice.com mailto:carsten@ng-voice.com Office +49 40 34927219 Fax +49 40 34927220 Sitz der Gesellschaft: Hamburg Registergericht: Amtsgericht Hamburg, HRB 120189 Geschäftsführer: Carsten Bock Ust-ID: DE279344284 Hier finden Sie unsere handelsrechtlichen Pflichtangaben: http://www.ng-voice.com/imprint/ Hi All, Given a situation where there are multiple registrars, behind a single load balancer, sharing the same location table in DB, I understand that Path can be used to ensure everything works nicely with clients behind NAT. So, if UA1 is registered on P1, UA2 on P2, and UA1 calls UA2... P1 performs lookup, sees path and sends via P2. What about situations where the distribution between registrars is being handled client-side through DNS SRV, not a load balancer? Path cannot be used then, right? As I understand it, in this instance add_path() will do nothing, is this correct? Thanks in advance, Charles www.sipcentric.com Follow us on twitter @sipcentric <http://twitter.com/sipcentric> Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered office: Unit 10 iBIC, Birmingham Science Park, Holt Court South, Birmingham B7 4EJ. _______________________________________________ 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 _______________________________________________ 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

If the add the Path header manually, then it is not seen by the registrar/usrloc module, asthe header will only be added when generating the "to be forwarded" message - and this never happens as the message terminates on the registrar. You could try msg_apply_changes() after adding the Path header. regards Klaus http://kamailio.org/docs/**modules/3.3.x/modules/** textopsx.html#textopsx.msg_**apply_changes<http://kamailio.org/docs/modu… On 22.02.2013 00:33, Charles Chance wrote: > Hi, > > Thanks for your reply. > > I did try that, but the path is still not stored in location table on > save. I have "use_path" parameter of registrar module enabled. > > > On 21 February 2013 23:17, Carsten Bock &lt;carsten(a)ng-voice.com > <mailto:carsten@ng-voice.com>> wrote: > > Hi, > > you cannot use add_path(), but by creating your own Path header this > works, e.g.: > > append_hf("Path: <sip:term@HOSTNAME:"+PORT+";**lr>\r\n"); > (from our P-CSCF config) > > Then your Proxy should also evaluate the DNS-SRV records. > > Kind regards, > Carsten > -- > Carsten Bock > CEO (Geschäftsführer) > > ==============================**==============================**= Die > ng-voice GmbH ist auf der Kamailio World 2013, 16./17. April 2013 > => > http://conference.kamailio.**com/k01/======================** > ==============================**=========<http://conference.kamailio.com/k01/=============================================================> > > ng-voice GmbH > Schomburgstr. 80 > D-22767 Hamburg / Germany > > http://www.ng-voice.com > mailto:carsten@ng-voice.com <mailto:carsten@ng-voice.com> > > > Office +49 40 34927219 > Fax +49 40 34927220 > > Sitz der Gesellschaft: Hamburg > Registergericht: Amtsgericht Hamburg, HRB 120189 > Geschäftsführer: Carsten Bock > Ust-ID: DE279344284 > > Hier finden Sie unsere handelsrechtlichen Pflichtangaben: > http://www.ng-voice.com/**imprint/ <http://www.ng-voice.com/imprint/> > > Hi All, > > Given a situation where there are multiple registrars, behind a > single load balancer, sharing the same location table in DB, I > understand that Path can be used to ensure everything works nicely > with clients behind NAT. So, if UA1 is registered on P1, UA2 on P2, > and UA1 calls UA2... P1 performs lookup, sees path and sends via P2. > > What about situations where the distribution between registrars is > being handled client-side through DNS SRV, not a load balancer? Path > cannot be used then, right? As I understand it, in this instance > add_path() will do nothing, is this correct? > > Thanks in advance, > > Charles > > > www.sipcentric.com <http://www.sipcentric.com/> > > Follow us on twitter @sipcentric <http://twitter.com/sipcentric**> > > > Sipcentric Ltd. Company registered in England & Wales no. 7365592. > Registered office: Unit 10 iBIC, Birmingham Science Park, Holt Court > South, Birmingham B7 4EJ. > ______________________________**_________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing > list > sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-**router.org<sr-users@lists.sip-router.org> > > > > http://lists.sip-router.org/**cgi-bin/mailman/listinfo/sr-**users<http:/… > > > ______________________________**_________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing > list > sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-**router.org<sr-users@lists.sip-router.org> > > > http://lists.sip-router.org/**cgi-bin/mailman/listinfo/sr-**users<http:/… > > > > > www.sipcentric.com <http://www.sipcentric.com/> > > Follow us on twitter @sipcentric <http://twitter.com/sipcentric**> > > > Sipcentric Ltd. Company registered in England & Wales no. 7365592. > Registered office: Unit 10 iBIC, Birmingham Science Park, Holt Court > South, Birmingham B7 4EJ. > > > ______________________________**_________________ > 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<http:/… > >