Yealink SIP-T52S Administrator's Guide

Configuring Security Features
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3. Select TLS from the pull-down list of Transport.
4. Click Confirm to accept the change.
To configure the trusted certificates via web user interface:
1. Click on Security->Trusted Certificates.
2. Select the desired values from the pull-down lists of Only Accept Trusted Certificates,
Common Name Validation and CA Certificates.
3. Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
4. Click OK to reboot the phone.
To upload a trusted certificate via web user interface:
1. Click on Security->Trusted Certificates.

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