Opticon H-19B 2D Manual page 81

To avoid damage to your hearing, do not hold your phone against your ear when the
Speakerphone is turned on.
Muting the Microphone
The device's microphone can be turned off during a
call. If you turn off the microphone the caller cannot
hear you. However, you can still hear the caller.
• Tap Mute during a call to turn the microphone off.
• Tap Unmute to turn the microphone on.
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