User's Manual
is ideal for most users. However, if you experience interference from other communication
devices during your calls, you may want to switch to the Low or Very Low modes. Changing to
Low or Very Low modes will reduce the range of your headset.
Power mode Range* Risk of interference
Normal Up to 150m/490 ft Average
Low Up to 30m/100 ft Low
Very Low (V. low) Approx. 10 m/33 ft Lowest
* In typical office environment
Note: The Normal power mode is the default setting.
To change the range/power mode:
1. Use
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to locate the range/power mode menu on base display.
2. Use
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6 to select one of the 3 modes from the menu.
3. Press OK to confirm the new mode.
2.5.4 Sound mode selection
This menu is split into two sections: “Treble/Normal/�ass” and “Fixed/Switch”. These two
sections are separated by a blank line. It is possible to choose one mode in each of the two
sections.
Your headset offers 3 treble/bass modes (Treble, Normal and �ass). You can change these to
suit your personal preferences or needs, and seperately determine the US� sound quality.
Sound mode Effect Benefits
Treble Accentuates high tones Ideal for users with slight high-
frequency hearing loss
Normal Accentuates all tones evenly Ideal for all users
�ass Accentuates lower tones Ideal for users preferring a bass-
rich sound
Note: The Normal mode is the default setting.
Sound mode Effect Benefits
Fixed Speech quality in headset loudspeaker as
known from traditional telephones
Improved talk time in US� mode
Switch Automatically switches to improved sound
quality. In conference call mode, automatic
switching is disabled.
Enhanced US� sound quality
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