Hi All. May be this has been asked before but I was not able to find an answer. I setup IMS with 3 instances of kamailio: P-CSCF, I-CSCF and S-CSCF (I got the config files from here https://github.com/kamailio/kamailio/tree/master/misc/examples/ims). I would like to register two clients to the IMS and make a VoLTE like call. So I want to setup my P-CSCF to send SIP messages to my I-CSCF without Rx interface (without using PCRF). I'm not able to find how to tell P-CSCF where to direct the sip traffic. It obviously should happen in route[REGISTER]. Right now P-CSCF sends all REGISTER requests to itself and goes to a loop. Regards. _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Hi, The answer is right, About your question: "I'm not able to find how to tell P-CSCF where to direct the sip traffic. It obviously should happen in route[REGISTER]." In [REGISTER] route block you could see this line: $ru = "sip:"+$rU+"@"+$rd; Actually you are setting R-URI, In this line the $rd PV refer to ICSCF in IMS network. With Regards. Mojtaba On Mon, Dec 10, 2018 at 6:15 PM Iman Mohammadi <iman.mohammadi.telecom(a)gmail.com> wrote: