15 Feb
2024
15 Feb
'24
8:26 a.m.
Hi Carsten,
thank you very much for your fast reply!
Good to know that from IMS point of view it is fairly simple, but as far as
I know it is more complex for MME, PGW and ePDG.
May you know any Open Source Mobile Core which is supporting VoLTE <->
VoWiFi HO with Kamailio?
Unfortunately, I am not at MWC, but I wishing you a productive time and
interesting conversations!
BR Christian
Am Do., 15. Feb. 2024 um 10:33 Uhr schrieb Carsten Bock <carsten(a)bock.info>fo>:
Hi,
The handover between VoWifi and VoLTE is fairly simple, as it has little
to do with IMS.
Technically speaking, the data session is migrated from the PGW (LTE) to
the ePDG (Wifi), using GTP on the S2b interface. The device keeps it's IP
address and the the handover is fully transparent to the IMS and related
systems.
If someone is at MWC in a little more than a week and wants to chat, drop
me a message.
Thanks,
Carsten
Christian Hahn via sr-users <sr-users(a)lists.kamailio.org> schrieb am Do.,
15. Feb. 2024, 09:41:
Hi all,
While researching for Open Source IMS Services I’v found the presentation
“What’s up with IMS & VoLTE?” at KamailioWorld 2018.
There is a quote that raises a question:
“Things, you shouldn’t expect (at least initially):
● Seamless handover between LTE and Wifi, as this requires some
integration with the PGW of the LTE”
My question is: Has the VoLTE <-> VoWiFi Handover been implemented in the
meantime?
BR Christian
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