Yealink SIP-T52S Administrator's Guide

Configuring Basic Features
149
The following table lists the associated and latest firmware name for each IP phone model (X is
replaced by the actual firmware version).
IP Phone Model
Associated
Firmware Name
Firmware Name Example
SIP-T54S/T52S
(T5S firmware unified)
70.x.x.x.rom
70.81.0.10.rom
SIP-
T48S/T46S/T42S/T41S
(T4S firmware unified)
66.x.x.x.rom
66.81.0.40.rom
SIP-T48G
35.x.x.x.rom
35.81.0.40.rom
SIP-T46G
28.x.x.x.rom
28.81.0.40.rom
SIP-T42G
29.x.x.x.rom
29.81.0.40.rom
SIP-T41P
36.x.x.x.rom
36.81.0.40.rom
SIP-T40P
54.x.x.x.rom
54.81.0.40.rom
SIP-T40G
76.x.x.x.rom
76.81.0.40.rom
SIP-T29G
46.x.x.x.rom
46.81.0.40.rom
SIP-T27P
45.x.x.x.rom
45.81.0.40.rom
SIP-T27G
69.x.x.x.rom
69.81.0.40.rom
SIP-T23P/G
44.x.x.x.rom
44.81.0.40.rom
SIP-T21(P) E2
52.x.x.x.rom
52.81.0.40.rom
SIP-T19(P) E2
53.x.x.x.rom
53.81.0.40.rom
CP860
37.x.x.x.rom
37.81.0.10.rom
CP920
78.x.x.x.rom
78.81.0.10.rom
Note
Upgrading Firmware from the Provisioning Server
IP phones support using FTP, TFTP, HTTP and HTTPS protocols to download configuration files
and firmware from the provisioning server, and then upgrade firmware automatically.
IP phones can download firmware stored on the provisioning server in one of two ways:
 Check for configuration files and then download firmware during startup.
 Automatically check for configuration files and then download firmware at a fixed interval
or specific time.
You can download the latest firmware online:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage.
Do not unplug the network and power cables when the IP phone is upgrading firmware.

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