Hello. I was looking for something on internet telephony for UT. Skype is not usable on UT and SIP is not what I am looking for. I didn't find anything usable in the open-store. So I was looking for what could be ported. I came across "Jitsi" and then this thread. Webapp is probably not the right way to go, but they have an API library. The only thing that scares me a lot about it is the fact that it's all in JavaScript.
https://github.com/jitsi/lib-jitsi-meet

It would probably be possible if most of the components are part of the SOC (wifi, modem, bluetooth ...). Even so, it will be necessary to fine-tune the rest, which is not part of the SOC in principle (camera, sensors ...).