Call Indicator Suppression (CIS):
This allows you to disable online and standby indicator lights.
To disable these indicators: First have the headset paired with a handheld device then press the volume up button while turning the headset ON.
To re-enable both indicator lights, turn the headset off, then press the volume up button again while turning the headset ON.
NOTE: This process only disables online and standby indicator lights when headset is connected to mobile phone. All other indicator lights such as low battery, call reject, Power On/Off, will continue to function.
When you turn your headset or phone off, then on again, it will turn the LED back on the headset.