Yealink SIP-T52S Administrator's Guide

Configuring Advanced Features
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2. Enter the action URLs in the corresponding fields.
3. Click Confirm to accept the change.
Action URI
HTTP/HTTPS GET Request
Opposite to action URL, action URI allows IP phones to interact with web server application by
receiving and handling an HTTP or HTTPS GET request. When receiving a GET request, the IP
phone will perform the specified action and respond with a 200 OK message. A GET request
may contain variable named as “key” and variable value, which are separated by “=”. The valid
URI format is: http(s)://<phoneIPAddress>/servlet?key=variable value . For example:
http://10.3.20.10/servlet?key=OK.
Note
SIP Notify Message
In addition, Yealink IP phones support performing the specified action immediately by
accepting a SIP NOTIFY message with the “Event: ACTION-URI” header from a SIP proxy server.
The message body of the SIP NOTIFY message may contain variable named as “key” and
variable value, which are separated by “=”.
This method is especially useful for users always working in the small office/home office where
a secure firewall may prevent the HTTP or HTTPS GET request from the external network.
Note
If you want to only accept the SIP NOTIFY message from your SIP server and outbound proxy
server, you have to enable the Accept SIP Trust Server Only feature. For more information, refer
to Accept SIP Trust Server Only on page 395.
Yealink IP phones are compatible with other two old valid URI formats:
http(s)://<phoneIPAddress>/cgi-bin/ConfigManApp.com?key=variable value and
http(s)://<phoneIPAddress>/cgi-bin/cgiServer.exx?key=variable value .

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