Yealink SIP-T23P User Manual page 27

You can customize your SIP-T23(P/G) IP phone by personally configuring certain settings,
for example, backlight, time & date and ring tones. You can add contacts to the phone's
local directory manually or from call history. You can also personalize different ring
tones for different callers.
This chapter provides basic operating instructions for customizing your phone. Topics
include:
General Settings

Audio Settings

Contact Management

Call History Management

System Customizations

If you require additional information or assistance with your new phone, contact your
system administrator.
You can configure the contrast of the LCD screen to a comfortable level.
To configure the contrast via phone user interface:
1. Press Menu->Settings->Basic Settings->Display->Contrast.
2. Press or
contrast.
The default contrast level is 6.
3. Press the Save soft key to accept the change or the Back soft key to cancel.
Contrast is configurable via web user interface at the path Settings->Preference.
, or the Switch soft key to increase or decrease the intensity of
Customizing Your Phone
17