Coming back on it again.
I used HMD, my audio where enabled to use voice.
Finaly i did hear some voices. i did say hello. but no response back.
And already not a lover of voice. This one of the reasons.
We really need some option to see if voice is working in HMD.
Suggestion would be under the microphone mute button in the settings menu. (the same where the atlas button sit) So you can open that menu and check if your microphone is having signal and how strong the signal is.