sip client register failed

[lglhust]

Hi herlesupreeth:

I have set up volte environment according to docs/tutorial/02-VoLTE-setup/. LTE UE registered to ims successfully, but sip client failed.

The account and password of sip client have been added into kamailio DB by "kamctl add 10000 1234" , and in databases kamailio the user 10000 can be found using "select * from subscriber".

Below is the pcscf log:

2(12688) NOTICE: <script>: PCSCF: REGISTER sip:192.168.13.95 (sip:[email protected] (192.168.13.11:57640) to sip:[email protected], 530a08da613a46708820312c54cecbe2)
2(12688) NOTICE: <script>: PCSCF REGISTER:
Destination URI:
Request URI: sip:192.168.13.95
2(12688) NOTICE: <script>: Source IP and Port: (192.168.13.11:57640)
Route-URI: sip:192.168.13.95;lr
2(12688) NOTICE: <script>: Received IP and Port: (192.168.13.95:5060)
2(12688) NOTICE: <script>: Contact header: "webclient" sip:[email protected]:57640;ob
2(12688) INFO: ims_registrar_pcscf [sec_agree.c:264]: cscf_get_security(): No security parameters found
2(12688) INFO: ims_registrar_pcscf [sec_agree.c:296]: cscf_get_security_verify(): No security-verify parameters found
2(12688) INFO: cdp [authstatemachine.c:270]: auth_client_statefull_sm_process(): after callback of event 1
94(12853) INFO: cdp [authstatemachine.c:270]: auth_client_statefull_sm_process(): after callback of event 7
89(12844) ERROR: <script>: Diameter: AAR failed on subscription to signalling

Pcscf return error: Status-Line: SIP/2.0 403 Can't register to QoS for signalling.

I think pcscf may treat the use 10000 as a volte user instead of a sip client user, and interacts with EPC.

How to solve the problem?
Thanks a lot.

[herlesupreeth]

Always attach a trace (.pcap), logs does not give much useful information

[lglhust]

Here is the packet capture.
Thanks.

register-err.zip

[herlesupreeth]

I think pcscf may treat the use 10000 as a volte user instead of a sip client user, and interacts with EPC.

True. You need to disable the following flags in pcscf.cfg file and restart P-CSCF

#!define WITH_RX
#!define WITH_RX_REG
#!define WITH_RX_CALL

[lglhust]

If i disable the flags, will the registeration of LTE UE be influenced ?
Doesn't the pcscf.cfg support the call between sip client and LTE UE ?

Thanks.

[herlesupreeth]

If i disable the flags, will the registeration of LTE UE be influenced ?

Mostly yes, it all depends on the UE whether its okay with having a call over default bearer or not (most UE are not as it results in lower quality)

Doesn't the pcscf.cfg support the call between sip client and LTE UE ?

No it doesn't. If you want to have perform call between sip client and LTE UE you need to have two instances of PCSCF on with default and another with RX disabled as I mentioned above. And, make sure you connect SIP client only to the one where RX is disabled. I haven't tried this setup so can't say it work or not.

[lglhust]

Hi herlesupreeth:
Another question: have you ever tried LTE video call ? I tried voice call switching to video call, but the call cannot continue for a while and will switch to voice again. Then the call will hung up by ims core.
I changed the APN GBR/MBR to 2048 Kbps, it seemed no works, without any improvements.

[herlesupreeth]

For Video you need to add another pcc rule in open5gs web ui with qci 2 arp 4 (just the way its done for voice call qci 1 arp 2)

[lglhust]

Thanks a lot.