Multifunction button: B/center button The multifunction button (B) serves several functions, depending on how long the button is pressed for: Answer / make call - Press momentarily End call - Press for 2 seconds Tone control adjustment - press for 6 seconds Conference mode requires another headset to be placed on the base - Press momentarily, you will hear 3 beeps while in conference mode. To remove headsets from conference mode, push multifunction button. Functionality of the + and - buttons (A & C) Use the - (A) button to: Mute - Press twice quickly Un-mute - Press twice quickly Volume - (A) or + (C): press momentarily Transmit volume adjustment (microphone volume adjustment)- press both (A & C) for 2 seconds simultaneously to get into the edit mode, then tap A or C for adjusting - or +. Audible indicators / beeps Out of range: Tone in headset every 10 seconds Mute: Tone in headset every 15 seconds Low Battery: Tone in headset every 20 seconds Incoming Call: Tone in headset with RHL…