Yealink SIP-T2 Series, Administrator'S Manual

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Configuring Basic Features
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2. Enter the desired time in the Screensaver Wait Time field.
3. Click Confirm to accept the change.
Backlight determines the brightness of the LCD screen display, allowing users to read
easily in dark environments. Backlight time specifies the delay time to
change the
intensity of the LCD screen when the IP phone is inactive. Backlight turns off quickly if a
short backlight time is configured, this may not give users enough time to read
messages. Backlight time is applicable to SIP
VP-T49G/SIP-T48G/T46G/T42G/T41P/T40P/T29G/T27P/T27G/T23P/T23G/T21(P) E2/CP860 IP
phones and EXP40 connected to SIP-T48G/T46G IP phones and EXP20 connected to
SIP-T29G/T27P/T27G IP phones.
You can configure the backlight time as one of the following types:

Always Off: Backlight is turned off permanently (not applicable to SIP
VP-T49G/SIP-T48G/T46G/T29G IP phones).

Always On: Backlight is turned on permanently.

15s, 30s, 60s, 120s, 300s, 600s or 1800s: Backlight is turned off when the IP phone is
inactive after a preset period of time (in seconds), but it is automatically turned on
if the status of the IP phone changes or any key is pressed.