To recover from some fault conditions, you may need to perform a System reset.
Follow the instructions below:
1- Simultaneously press the call control button and both the "+" and "-" volume control buttons for 5 seconds. When the talk indicator light on the headset blinks, release all buttons
2- Press the call control button again. the talk indicator light will again blink briefly to indicate the headset is back to normal operation mode.
3-Disconnect the AC charger from the AC charging jack for 5 seconds.
4-Reconnect to complete the system reset