Yealink SIP-T52S Administrator's Guide

Configuring Basic Features
207
Parameters
Permitted Values
Default
15-15s
30-30s
60-1min
120-2min
300-5min
600-10min
1800-30min
If it is set to 60 (1min), the intensity of the LCD screen will be changed when the IP phone
has been inactivated for 60 seconds.
For SIP-T54S/T52S/T48G/T48S/T46G/T46S/T29G:
The default value is 0.
For SIP-T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P)
E2/CP860/CP920:
The default value is 30.
Note: It is not applicable to SIP-T19(P) E2 IP phones.
Web User Interface:
Settings->Preference->Backlight Time(seconds)
Phone User Interface:
Menu->Basic->Display->Backlight->Backlight Time
To configure the backlight via web user interface:
1. Click on Settings->Preference.
2. Select the desired value from the pull-down list of Unused BackLight.
3. Select the desired value from the pull-down list of Active Backlight Level.
4. Select the desired value from the pull-down list of Backlight Time(seconds).
5. Click Confirm to accept the change.
To configure the backlight via phone user interface:
1. Press Menu->Basic->Display->Backlight.
2. Press or , or the Switch soft key to select the desired level from the Active

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