Yealink SIP-T27G Administrator's Guide

Advanced Features
462
The uaCSTA feature on the phone may be used for remote control of the phone from computer applications such as
PC softphone. You can use the application to control the phone to perform basic call operations. For example,
place a call, answer a call, end a call and transfer a call to another party.
It is not applicable to T19(P) E2/CP920 phones.
Topic
CSTA Control Configuration
CSTA Control Configuration
The following table lists the parameter you can use to configure CSTA control.
Parameter
features.csta_control.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the CSTA feature.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Features > Remote Control > CSTA Control
[1]
If you change this parameter, the phone will reboot to make the change take effect.
Action URL
Action URL allows the phones to interact with web server applications by sending an HTTP or HTTPS GET request.
You can specify a URL that triggers a GET request when a specified event occurs. Action URL can only be
triggered by the predefined events (for example, Open DND). The valid URL format is: http(s)://<server-
IPAddress>/help.xml? .
An HTTP or HTTPS GET request may contain a variable name and a variable value, separated by “=”. Each vari-
able value starts with $ in the query part of the URL. The valid URL format is: http(s)://<server-
IPAddress>/help.xml?variable name=$variable value . The variable name can be customized by users, while the
variable value is predefined. For example, a URL “http://192.168.1.10/help.xml?mac=$mac” is specified for the
event Mute, the $mac will be dynamically replaced with the MAC address of the IP phone when the IP phone mutes
a call.
Topics
Predefined Events List
Variable Values List
Action URL Configuration
Predefined Events List
The following table lists the predefined events for action URL.
Event
Description
Setup Completed When the IP phone completes startup.
Registered When the IP phone successfully registers an account.
Unregistered When the IP phone logs out of the registered account.

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm