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environment, you may want to move the MTH800 closer to
you for better transmission.
3. To de-activate speakerphone, press Erpce. The display
shows
Speaker OFF.
To burst into conversation while the other party is talking,
press and hold
PTT. You will hear a tone. Start talking, and
release
PTT to listen again to the other party.
Muting/Unmuting the Bottom Microphone
During a Phone, PABX, or full-duplex Private Call, use the
mute feature to:
• hold conversation without being heard by the caller
• silence possible background noise in your area
1. Press Mute. The display shows Mute is ON. The
microphone is muted. You can hear the incoming audio, but
the caller cannot hear any speech coming from your
MTH800.
2. To speak, press Unmut. The display shows Mute is OFF.
The microphone is on.
Covert Mode
If configured by your Service Provider the Covert Mode gives
to you the ability to completely shut down all visible and
audible MTP850 alerts and notifications. This feature makes
the MTP850 effectively unnoticeable even in a silent and
dark environment.
To Enter the Covert Mode:
• Press the Cover Mode one-touch button (if programmed
by your Service Provider).
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