Yealink T40G Administrator's Guide

Advanced Features
497
The browser will display an image of the phone’s current screen. You can save the image to
your local system.
- Else, the browser will display an image of the phone’s current screen directly. You can save the
image to your local system.
Note
Frequent capture may affect the phone performance. Yealink recommend you to capture the phone screen
display within a minimum interval of 4 seconds.
Example: Placing a Call via Web User Interface
Supported 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
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 .
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

Yealink T40G Specifications

General

SIP Accounts	3
Wall Mountable	Yes
Opus Codec	No
Display	2.3 inch 132x64-pixel graphical LCD
Network	Dual-port Gigabit Ethernet
PoE	Yes
Headset Support	Yes, RJ9 port
Power Adapter	Optional
Voice Codecs	G.722, G.711(A/μ), G.729AB, G.726
Local Phonebook	1000 entries