82 Model 53i IP Phone User Guide
Making Calls
Press the button at any time to mute handset, headset, or handsfree.
The speaker light flashes slowly and you can hear the caller, but they cannot hear
you. To switch mute on or off, press .
IP Phone UI
Note: If you place a muted call on hold, the phone automatically takes the call
off mute when you reconnect to the call.