User Guide for the SIP-T28P IP Phone
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Contrast is configurable via web user interface at the path Settings->Preference.
You can configure the backlight to adjust the brightness of the LCD screen. Backlight
active level is used to adjust to the backlight intensity of the LCD screen. Backlight time
specifies the delay time to turn off the backlight when the IP phone is inactive.
You can configure the backlight status on the LCD screen from the following options:
Always Off: Backlight is turned off permanently.
Always On: Backlight is on permanently.
15s, 30s, 60s, 120s, 300s, 600s or 1800s: Backlight is turned off when the phone is
inactive after the designated time (in seconds).
To configure the backlight via phone user interface:
1. Press Menu->Settings->Basic Settings->Display->Backlight.
2. Press or , or the Switch soft key to select the desired level from the
Backlight Level field.
3. Press or , or the Switch soft key to select the desired type from the
Backlight Time field.
4. Press the Save soft key to accept the change or the Back soft key to cancel.
Backlight is configurable via web user interface at the path Settings->Preference.
The default language of the phone user interface is English. If the language of your web
browser is not supported by the phone, the web user interface will use English by
default. You can change the language for the phone user interface and the web user
interface respectively.
To change the language for the phone user interface:
1. Press Menu->Settings->Basic Settings->Language.
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