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• Do not speak at the same time as the other party during a call. If you and
the other party speak at the same time, it may be difficult for the other party
to hear your voice and vice versa. This is normal.
• The receiver sound volume should be set as low as possible. Otherwise,
the party you are calling may notice an undesirable echo sound.
• Speak clearly and loudly.
• Your voice may be difficult to be heard by the receiving party under the
following conditions:
o Driving on a rough road.
o Driving at a high speed.
o Driving with a window open.
o When air from the ventilator blows directly towards the microphone.
o When the sound coming from the ventilator is loud.
o When the cell phone is positioned too closely to the microphone.
• The sound quality may degrade due to the influence of the cell phone that is
connected to the system or the circumstances of the Bluetooth network.
• When another Bluetooth device is simultaneously connected, noise may be heard
in the voice coming from the hands-free phone.
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