[sr-dev] [kamailio/kamailio] volte：401 Unauthorized (#2703)

[King-Osmond]

Hello!

I have a problem about volte.

>  4(4467) INFO: rr [rr_mod.c:515]: pv_get_route_uri_f(): No route header present.
>  4(4467) NOTICE: <script>: PCSCF REGISTER: 
>  Destination URI: <null>
>  Request URI: sip:ims.mnc007.mcc460.3gppnetwork.org
>  4(4467) INFO: rr [rr_mod.c:515]: pv_get_route_uri_f(): No route header present.
>  4(4467) NOTICE: <script>: Source IP and Port: (10.45.0.6:5060)
>  Route-URI: 
>  4(4467) NOTICE: <script>: Received IP and Port: (192.168.107.6:5060)
>  4(4467) NOTICE: <script>: Contact header: <sip:460070000000001 at 10.45.0.6:5060>;+sip.instance="<urn:gsma:imei:86772304-493882-0>";+g.3gpp.accesstype="cellular2";audio;video;+g.3gpp.smsip;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
>  4(4467) INFO: ims_registrar_pcscf [sec_agree.c:296]: cscf_get_security_verify(): No sec
![1617780139(1)](https://user-images.githubusercontent.com/65008453/113834050-f41b2e80-97bc-11eb-8ebb-c669f2fee210.png)
![1617780742(1)](https://user-images.githubusercontent.com/65008453/113834075-fa110f80-97bc-11eb-951c-9a75283ff69a.png)

urity-verify parameters found
![1617781355(1)](https://user-images.githubusercontent.com/65008453/113834098-04330e00-97bd-11eb-8dd3-3ff310df2e7c.png)
[open5gs.tar.gz](https://github.com/kamailio/kamailio/files/6270079/open5gs.tar.gz)


Can you help me see where the problem is？

Thanks!

Tips：About SQN, the SQN is the same at the beginning of the test (Open5GS, FOHSS), but when it is found that the sip registration fails, the SQN is inconsistent.  If this situation is normal? If it is not normal, how to solve it?

open5gs：v2.2.3
kamailio：5.3

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