Yealink T40G Administrator's Guide

Phone Customization
165
Description
It enables or disables the phone’s headset mode.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Parameter
phone_setting.headsetkey_mode
<y0000000000xx>.cfg
Description
It configures headset mode precedence during a call.
Permitted
Values
0-Always use (pressing the Speakerphone key and picking up the handset are not
effective when the headset mode is activated)
1-Use as normal
Default
1
DSS Keys
There are three kinds of DSS keys: Line Keys, Programmable Keys and Ext Keys. You can assign various
functions to DSS keys. This section explains how to set these keys.
Line key is not applicable to T19(P) E2 IP phones, ext key is only applicable to expansion modules
connected to T54S/T52S/T48S/T48G/T46S/T46G/T29G/T27P/T27G IP phones.
Note
If the phone is downgraded to an earlier firmware from firmware version 83, the DSS key configuration will
be reset after downgrading.
Topics
Supported DSS Keys
Supported Dsskey Types
Line Keys
Programmable Keys
Ext Keys
Supported DSS Keys
The following table lists the number of DSS keys you can configure for each phone model:
Phone Model
Line Keys
Programmable Keys
Ext Keys
T54S
27
15
60
T52S
21
13
60
T48G/S
29
15
40

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