Add a button to wake up someone w/ headphones muted

When someone has muted his own headphones and therefore is hearing nothing else, add a button that says, for example "hey, wake up" (just like in TeamSpeak) whe you have something important to say to that person, and it is pretty useful. if someone is afk, he/she won't respond, if he is not but really can't talk, he quickly unmute and say to not do it or even toggle a button to disable this wake up button.