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What do the LEDs on the HDL300 microphone and speaker bar mean?

The colors of the LED lights on the microphone and speaker bar can reflect different statuses. There are three brightness levels for the microphone and speaker bar's LEDs: dim, bright and off. To change the brightness of the LEDs press the F1 button on your remote control.

The table below shows the various light signals, patters and what they mean:            


LED  light state






Solid red


In-call mute



Solid white


System on and  operational



Directional white


System starting up



Solid blue





Directional blue


Incoming call



Flashing red





  LED volume indicators

The microphone and speaker's LED lights also change to indicate changes in the speakerʼs output volume.


Volume increase




Volume decrease




Maximum volume reached




Minimum volume reached




Last updated: March 16, 2018

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