Yealink SIP-T48G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
106
2. Select the desired value from the pull-down list of Contrast.
3. Click Confirm to accept the change.
To configure contrast via phone user interface:
1. Press Menu->Settings->Basic Settings->Display->Contrast.
2. Press or , or the Switch soft key to increase or decrease the intensity of
contrast.
The default contrast level is 6.
3. Press the Save soft key to accept the change.
Wallpaper is an image used as the background of the IP phone idle screen. Users can
select an image from IP phone’s built-in background or customize wallpaper from
personal pictures. To set the custom wallpaper as the IP phone background, you need to
upload the custom wallpaper to the IP phone in advance. The wallpaper is only
applicable to SIP-T48G, SIP-T46G and SIP-T29G IP phones.
The wallpaper image format must meet the following:
Phone Model
Format
Resolution
Single File Size
Total File Size
SIP-T48G
.jpg/.png/.bmp
<=800*480
<=5MB
<=20MB
SIP-T46G/T29G
.jpg/.png/.bmp
<=480*272
<=5MB
<=20MB
Procedure
Wallpaper can be configured using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure the wallpaper
displayed on the IP phone.
Parameter:
phone_setting.backgrounds

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