Bluetooth system setting
The situation: I have a Bose qc35 II, and for some reason, the microphone deosn't work on linux over bluetooth, it's a well known issue not related to Jami.
The solution is to setup my laptop microphone as default, so I can hear people from my headphone andthe can hear me from my laptop microphone. (see attached screeshot)
This setup works well on telegram app, whereby and nextcloud talk (using firefox or chrome) but on Jami it's lookalike the app try to use my headset microphone, so nobody can hear me.