Yealink SIP-T52S Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Yealink IP phones also support a combination of the variable values in the URI, but the order of
the variable value is determined by the operation of the phone. The valid URI format is:
http(s)://<phoneIPAddress>/servlet?key=variable value[;variable value] . Variable values are
separated by a semicolon from each other. This method is not applicable to SIP-T48G/S IP
phones.
The following shows an example for deleting all entries from the call history list when the
phone is idle:
For SIP-
T54S/T52S/T48G/T48S/T46G/T46S/T42G/T42S/T41P/T41S/T40P/T40G/T29G/T27P/T27G/T23P/T
23G/T21(P) E2/T19(P) E2 IP phones:
http:// 10.3.20.10/s ervlet?key=F1;F3;DOWN;DOWN;DOWN;OK;OK.
For CP860/CP920 phones:
http:// 10.3.20.10 /servlet?key=F1;OK;F3;DOWN;DOWN;DOWN;OK;OK.
Configuring Trusted IP Address for Action URI
For security reasons, IP phones do not handle HTTP/HTTPS GET requests by default. You need
to specify the trusted IP address for action URI. When the IP phone receives a GET request from
the trusted IP address for the first time, the LCD screen prompts the message “Allow remote
control?”. Press the OK soft key on the phone to allow remote control. You can specify one or
more trusted IP addresses on the IP phone, or configure the IP phone to receive and handle the
URI from any IP address.
If you are using SIP NOTIFY message method, you do not need to specify the trusted IP address
for action URI. But you should enable the IP phone to receive the action URI requests. When
the IP phone receives a SIP NOTIFY message with the “Event: ACTION-URI” header from a SIP
proxy server for the first time, the LCD screen also prompts the message “Allow remote
control?”.
You can use action URI feature to capture the phone’s current screen. For more information,
refer to Scenario A - Capturing the Current Screen of the Phone on page 747.
Procedure
Specify the trusted IP address for action URI using the following methods.
Central
Provisioning
(Configuration
File)
<y0000000000xx>.cfg
Configure the IP phone to receive the
action URI requests.
Parameter:
features.action_uri.enable

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