You can comment RX in pcscf.cfg but if you don't use a PCRF or a EPC that's not VoLTE call any more and You can use a softphone like Zoiper to set up call on your ims and check your ports that you specify for P-CSCF and I-CSCF in DNS and cfg files for solving loop problem

On Mon, Dec 10, 2018, 17:53 Tsvetan Filev <tsvetan.filev@inno-networks.com wrote:

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.

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