Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
206
Parameters
Permitted Values
Default
For T29G/T27P/T27G IP phones, it configures the LCD’s intensity of the IP phone and the
connected EXP20.
Note: It is applicable to SIP-T54S/T52S IP phones and the connected EXP50, SIP-
T48G/T48S/T46G/T46S IP phones and the connected EXP40, SIP-T29G/T27P/T27G IP
phones and the connected EXP20.
Web User Interface:
Settings->Preference->Active Backlight Level
Phone User Interface:
Menu->Basic->Display->Backlight->Active Level
phone_setting.inactive_backlight_level
0 or 1
1
Description:
Configures the intensity of the LCD screen when the phone is inactive.
0-Off
1-Low
For T54S/T52S IP phones, it configures the LCD’s intensity of the IP phone.
For T48G/T48S/T46G/T46S IP phones, it configures the LCD’s intensity of the IP phone and
the connected EXP40.
For T29G IP phones, it configures the LCD’s intensity of the IP phone and the connected
EXP20.
If it is set to 0 (Off), it works only if the value of the parameter
“phone_setting.backlight_time” is not set to 1 (Always On).
Note: It is applicable to SIP-T54S/T52S IP phones, SIP-T48G/T48S/T46G/T46S IP phones and
the connected EXP40, SIP-T29G IP phones and the connected EXP20.
Web User Interface:
Settings->Preference->Unused BackLight
Phone User Interface:
Menu->Basic->Display->Backlight->Inactive Level
phone_setting.backlight_time
0, 1, 15, 30, 60, 120, 300,
600 or 1800
Refer to the
following
content
Description:
Configures the delay time (in seconds) to change the intensity of the LCD screen when the
IP phone is inactive.
0-Always On
1-Always Off (not applicable to SIP-T54S/T52S/T48G/T48S/T46G/T46S/T29G IP phones)

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