Yealink SIP-T52S Administrator's Guide

Configuring Basic Features
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The LCD screen displays the soft keys in the adjusted order.
8. Click Confirm to accept the change.
Customizing Softkey Layout Template File
The softkey layout template allows you to customize soft key layout for different call states. The
call states include CallFailed, CallIn, Connecting, Dialing (not applicable to SIP-T48G/S),
RingBack, Talking and ConferenceManager (only applicable to CP920).
You can ask the distributor or Yealink FAE for softkey layout template. You can also obtain the
softkey layout template online:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage. For more
information on obtaining the softkey layout template, refer to Obtaining Boot
Files/Configuration Files/Resource Files on page 142.
The following table lists soft keys available for IP phones in different call states.
Call State
Default Soft Keys
Optional Soft Keys
CallFailed(Call Fail)
NewCall
Empty
Empty
Empty
Empty
Switch
End Call
CallIn(Incoming Call)
Answer
Forward
Silence
Reject
Empty
Switch
Decline（not applicable to
CP920）
Connecti
ng
Connecting
Empty
Empty
Empty
Empty
Switch

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