Hi Shantanu,

It looks like Authentication is failing. I dont think sipp supports
Digest-AKAv1-MD5. Have you ensured that correct (Digest-MD5) Algorithm is
selected in FHoSS?

Then, restart S-CSCF just in case there is cached registration data and
give it a try.

Best Regards,
Supreeth



On Sun, 26 May 2024 at 20:58, Shantanu K Roy <[email protected]> wrote:

> Hi Supreeth,
> I made necessary changes in the sipp side to put the domain name instead
> of the IP of the xcscf. Now the SIP registration progresses to the point
> where the xcscf is challenging sipp with 401 Unauthorized and sipp is
> responding back with the authentication credentials (e.g for the 1st UE ->
> [authentication username=001010123456791
> aka_OP=0x11111111111111111111111111111111
> aka_K=0x8baf473f2f8fd09487cccbd7097c6862 aka_AMF=0x8000];) I took the OP, K
> and AMF values as programmed in the FHoSS.
> I am enclosing the pcap and syslog snips for the transaction.
> Please let me know if any more information is required.
> Regards,
> Shantanu
>
>
> On Fri, May 24, 2024 at 11:18 AM Supreeth Herle <[email protected]>
> wrote:
>
>> 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 <
>> [email protected]> 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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