Contrast - Yealink SIP-T48G User Manual

Backlight Idle Intensity decides whether the IP phone turns off or dusky the backlight of
the touch screen after a period of inactivity.
You can configure the backlight status on the touch screen as the following types:
Always On: Backlight is on permanently.

15s, 30s, 60s, 120s, 300s, 600s, 1800s: Backlight goes out or turns dusky when the

phone has been inactive for approximately 15, 30, 60, 120, 300, 600 or 1800
seconds.
To configure the backlight via phone user interface:
1. Tap ->Basic->Display->Backlight.
2. Tap the gray box of the Backlight Active Level field.
3. Tap the desired level from the pull-down list.
4. Tap the gray box of the Backlight Inactive Level field.
5. Tap the desired value from the pull-down list.
6. Tap the gray box of the Backlight Time field.
7. Tap the desired time from the pull-down list.
8. Tap the Save soft key to accept the change or
Backlight is configurable via web user interface at the path Settings->Preference.
You can configure the contrast of the expansion module EXP40 connected to the
SIP-T48G IP phone to a comfortable level on the phone. Ensure that the expansion
module has been connected to the phone before configuration.
To configure the contrast via phone user interface:
1. Tap ->Basic->Display->Contrast.
2. Tap the gray box of the Contrast Level field.
Customizing Your Phone
to cancel.
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