Hi Shantanu,

While using sipp to test IMS, I would suggest setting the IP of P-CSCF as ims.mnc001.mcc001.3gppnetwork.org rather than harcoding the IP address of the P-CSCF (192.168.50.169).

Btw, I dont see the Rx signalling in the pcap attached.

BR,
Supreeth

On Thu, 23 May 2024 at 21:46, Shantanu K Roy via sr-users <sr-users@lists.kamailio.org> wrote:
Hello,
We are trying to integrate Kamailio as the IMS server with our 5G core emulator by following the steps listed out at https://open5gs.org/open5gs/docs/tutorial/02-VoLTE-setup/. In our case, we have our own 5G core emulator instead of the Open5GS core.
We are using sipp scripts to generate the SIP calls. The PCRF component of the 5G core is emulated by us and is capable of handling Diamater calls from Kamailio over the Rx interface.
We have got the setup working to the point where the SIP Register calls are landing on the PCSCF which in turn is sending out AA Requests to PCRF and the PCRF is responding. However there is an internal error in the Kamailio log
"4(3682133) ERROR: ims_qos [ims_qos_mod.c:1305]: w_rx_aar_register(): This contact does not exist in PCSCF usrloc - error in cfg file"
Please help us in identifying if we are missing anything in the Kamailio set up.
The packet capture and syslog excerpts from the VM where Kamailio is running are attached; here we are trying to perform SIP Registration for three SIP endpoints 001010123456791, 001010123456792 and 001010123456793.
If there is any additional information required, please let us know.
Regards,
Shantanu Kumar Roy

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