Yealink SIP-T40G Manual

Using Enhanced DSS Keys on Yealink IP Phones
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 Call failed – The outgoing call encounters a failure.
 Ring back - There is an outgoing call on the phone. And the phone is in the ringback state.
 Transfer ring back - There is a call being transferred to another phone. And the phone is
in the ringback state.
 Hold – The call is placed on hold on the phone.
 Held – The call is held.
 Conference – The phone sets up a conference call.
 Dial tone – You can hear a dial tone. But there are no numbers entered.
 Dialing – The phone is on the dialing screen. That is, the entered numbers are not dialed
out.
To configure the soft keys using configuration files:
1. Add/Edit soft key parameters in the configuration file (e.g., features.cfg).
The following table lists the information of parameters:
Parameters
Permitted Values
Default
features.enhanced_dss_keys.enable
0 or 1
0
Description:
It enables or disables the Enhanced DSS Keys (EDK) feature.
0-Disabled
1-Enabled
softkey.X.enable
(X ranges from 1 to 10)
0 or 1
0
Description:
It enables or disables the custom soft key X.
0-Disabled
1-Enabled
Note: It works only if the value of the parameter “features.enhanced_dss_keys.enable”
is set to 1 (Enabled).
softkey.X.label
(X ranges from 1 to 10)
String
Blank
Description:
It configures the text displayed on the soft key label.
Note: It works only if the values of the parameters
“features.enhanced_dss_keys.enable” and “softkey.X.enable” are set to 1 (Enabled).

Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm