Okay, I finally found the problem. Jami does not play well with the microphone on the Logitech C920 webcam. So I bought a 3.5mm jack analog microphone and it works properly from the first call.
Okay, I finally found the problem. Jami does not play well with the microphone on the Logitech C920 webcam. So I bought a 3.5mm jack analog microphone and it works properly from the first call.