Polycom MX392 - Manual (Page 29)

Next, right click in the D EACTIVATED C OMMAND column for Logic Input 1 and select I NSERT , I NPUT , 1,
M UTE , O N . Now, whenever the microphone is muted (Mute = True), the LED will not illuminate on
the MX392.
Here is what the screen should look like when you are finished:
Make sure the LED works as designed. If you press the membrane switch, you should see the LED
above the pin illuminate in Conference Composer as well as on the MX392. Since the switch is a
toggle switch, the LED will stay lit until the switch is pushed again:
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