VX3400 49
Settings
NOTE
Dual-Tone Multi Frequency (DTMF) Signaling by the
simultaneous transmission of two tones, one from a group of
low frequencies and another from a group of high frequencies.
Each group of frequencies consists of four frequencies. Setting
the Key Beep length to Long will extend the DTMF tone.

2. Display

Options to customize the phone’s display screen.
2.1 Banner
Allows you to enter a string of up to 16 characters
which display on the LCD screen.
1. Press , , , .
2. Enter your banner text then press .
2.2 Backlight
Allows you to set the phone's illumination. You can
set how long the screen (Main LCD) is lit as well as
how bright and set how long the keys (Key Light
Timer) are lit.
1. Press , , , .
2. Choose a sub-menu.
Main LCD / Key Light Timer
3. Choose a setting and press .
Timer / Brightness
If an amount of time is set for the timer option, the
time starts after the last key was pressed.
NOTE This setting will affect your battery. Backlight uses
more energy and will drain your battery more quickly.
2. 2. 1. Main LCD
Timer Options
7 seconds
15 seconds
30 seconds
Always On: Backlight is always on.
Always Off: Backlight is never on.
Brightness Sets the brightness level of the backlight.
0% / 25% / 50% / 75% / 100%
2. 2. 2. Key Light Timer
7 seconds
15 seconds
Always On: Backlight is always on.
Always Off: Backlight is never on.
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