Will my supervised agents be alerted that I have started listening ? Mark Gibbons 18 July 2019 20:00 Updated No. Only you as a supervisor will hear a tone signaling “listen-in” mode after pressing the star code. Related articles When should I use Call Supervision ? How do I add a supervision license to an existing user ? How do I create a new user? How do I configure Call Recording in my Business Phone service? What is Business Phone recording ?