Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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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 (take SIP-T23G IP phones for example):
1. Press Menu->Settings->Basic Settings->Display->Contrast.
2. Press or , or the Switch soft key to increase or decrease the intensity of
contrast.
3. Press the Save soft key to accept the change.
To configure the contrast via phone user interface:
1. Press Menu->Basic->Display->Contrast.
If EXP40 is not connected to the phone, the Contrast Setting screen displays "No EXP".
2. Press or , or the Switch soft key to increase or decrease the intensity of contrast.
3. Press the Save soft key to accept the change or the Back soft key to cancel.
Wallpaper
Wallpaper is an image used as the background of the IP phone and EXP50 (if connected). 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/EXP50 background, you need to upload
the custom wallpaper to the IP phone in advance. The wallpaper is only applicable to SIP-T54S,
SIP-T52S, SIP-T48G/S, SIP-T46G/S, SIP-T29G IP phones and EXP50 (connected to the SIP-
T54S/T52S IP phones) expansion module.
For SIP-T54S/T52S IP phones, you can also set a custom picture stored in your USB flash drive
as the wallpaper. In order to do this, make sure the USB flash drive containing pictures is
connected to your phone. For more information, refer to Yealink phone-specific user guide .
You can set the wallpaper for the SIP-T54S/T52S/T48G/T48S/T46G/T46S/T29G IP phones idle
screen (for T48G/S, the DSS key list is folded) and EXP50 (connected to the SIP-T54S/T52S IP
phones) expansion module.
You can also separately set the wallpaper for the SIP-T48G/S IP phones when the DSS key list is
unfolded, avoiding the display of the line key labels to be blocked by the background image.

Yealink SIP-T52S Specifications

General

Touchscreen	-
Display diagonal	2.8 \
Backlight display	Yes
Display resolution	320 x 240 pixels
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
Bluetooth version	2.1+EDR
Security algorithms	802.1x RADIUS, HTTPS, MD5
Ethernet LAN interface type	Gigabit Ethernet
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	G.722, G.723, G.723.1, G.726, OPUS, iLBC
Volume control	Digital
Operating temperature (T-T)	-10 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Front camera	No
Operating system installed	Linux

Weight and Dimensions

Depth	212 mm
Width	211.6 mm
Height	166.8 mm