Yealink SIP-T52S Administrator's Guide

Configuring Basic Features
205
Phone Model (and
the connected
expansion module)
Configuration
Methods
Configuration Options
Phone User
Interface
Backlight Time
T42G/S
T41P/S
T40P/G
T23P/G
T21(P) E2
CP860
CP920
Configuration Files
Web User Interface
Phone User
Interface
Backlight Time
Procedure
Backlight can be configured using the following methods.
Central Provisioning
(Configuration File)
<y0000000000xx>.
cfg
Configure the backlight of the LCD screen.
Parameters:
phone_setting.active_backlight_level
phone_setting.inactive_backlight_level
phone_setting.backlight_time
Web User Interface
Configure the backlight of the LCD screen.
Navigate to:
http://<phoneIPAddress>/servlet?p=setti
ngs-preference&q=load
Phone User Interface
Configure the backlight of the LCD screen.
Details of Configuration Parameters:
Parameters
Permitted Values
Default
phone_setting.active_backlight_level
Integer from 1 to 10
8
Description:
Configures the intensity of the LCD screen when the phone is active.
10 is the highest intensity.
For T54S/T52S IP phones, it configures the LCD’s intensity of the IP phone and the
connected EXP50.
For T48G/T48S/T46G/T46S IP phones, it configures the LCD’s intensity of the IP phone and
the connected EXP40.

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