User`s manual

420HD IP Phone with Microsoft Lync
User's Manual 30 Document #: LTRT-11891
4.6 Defining LCD Backlight Timeout
You can define how long the phone’s backlight will stay on when the phone is idle. When this
duration times out, the backlight switches off. For the backlight to never time out, you can select
the Always on option.
 To define LCD backlight timeout:
1. Access the Backlight Timeout screen (MENU key > Settings menu > Backlight Timeout
submenu).
2. Navigate to and select Always on or 10 seconds or 60 seconds).
3. Press the Select softkey to apply your settings.
4. Press the Save softkey to save your settings.