Yealink SIP-T48G Administrator's Guide

Configuring Basic Features
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The custom wallpaper appears in the pull-down list of Wallpaper.
To change the wallpaper via web user interface:
1. Click on Settings->Preference.
2. Select the desired wallpaper from the pull-down list of Wallpaper.
3. Click Confirm to accept the change.
To change the wallpaper via phone user interface:
1. Press Menu->Basic->Display->Wallpaper.
2. Press or , or the Switch soft key to select the desired wallpaper.
3. Press the Save soft key 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-T48G/T46G/T42G/T41P/T40P/T29G/T27P/T23P/T23G/T21(P) E2/CP860 IP phones and
EXP40 connected to SIP-T48G/T46G IP phones and EXP39/EXP20 connected to
SIP-T29G/T27P 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-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

Yealink SIP-T48G Specifications

General

Expansion module support	Yes
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Volume control	-
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
AC adapter input voltage	100 - 240 V
Number of handles included	1 pc(s)

Weight and Dimensions

Width	266 mm
Height	185 mm