Yealink SIP-T52S User Manual

User Guide for T5 Series IP Phones
46
Configuring the Backlight
Backlight has three options:
Active Level: The brightness of the LCD screen when the phone is active. Digits (1-10) represent
different backlight intensities and 10 is the highest level.
Inactive Level: The brightness of the LCD screen when the phone is inactive. You can select a
low intensity or turn off the backlight.
Backlight Time: The delay time to change the brightness of the LCD screen when the phone is
inactive. You can configure the phone to change its backlight intensity after a period of time or
always turn on the backlight.
 Always On: Backlight is always on.
 15s, 30s, 1min, 2min, 5min, 10min or 30min: Backlight intensity changes when the phone
is inactive after a period of time.
Procedure:
1. Navigate to Menu->Basic->Display->Backlight.
2. Select the desired level from the Active Level field.
3. Select the desired value from the Inactive Level field.
4. Select the desired time from the Backlight Time field.
5. Press Save.
Backlight is configurable via web user interface at the path Settings->Preference.
Changing the Language
The default language of the phone user interface is English. If the language of your web browser
is not supported by the phone, the web user interface will use English by default. You can
change the language for the phone user interface and the web user interface respectively.

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