Yealink SIP-T31G Administrator's Guide

Audio Features
174
Note: It works only if “features.headset_mode.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled, the headset mode will be deactivated after the call, if you switch the headset mode to
speakerphone/handset mode.
1-Enabled, the headset mode will not be deactivated after the call, even if you switch the headset
mode to speakerphone/handset mode.
Default
0
Supported
Devices
All phones except CP920
Web UI
Features > General Information > Headset Prior
Parameter
features.headset.ctrl_call.enable <y0000000000xx>.cfg
Description
It enables or disables the user to initiate or end a call by pressing the HEADSET key.
Note: It works only if “features.headset_mode.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
0
Supported
Devices
All phones except CP920
Dual Headset
The dual headset allows you to use two headsets on one IP phone. To use this feature, you need to physically con-
nect two headsets to the headset and handset jacks respectively. Once the IP phone connects to a call, the headset
connected to the headset jack has the full-duplex capability, with the headset connected to the handset jack is only
used for listening.
Note: The dual headset is not applicable to the Bluetooth headset and USB headset. It is not applicable to CP920 phones.
Topic
Dual Headset Configuration
Dual Headset Configuration
The following table lists the parameter you can use to configure dual headset.
Parameter
features.headset_training <y0000000000xx>.cfg
Description
It enables or disables the dual headset feature.
Note: It works only if “features.headset_mode.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, users can use two headsets on one phone. When the IP phone joins a call, the headset
connected to the headset jack has the full-duplex capability, with the headset connected to the hand-
set jack is only used for listening.
Default
0
Supported
Devices
All phones except CP920
Web UI
Features > General Information > Dual Headset

Yealink SIP-T31G Specifications

General

Mounting kit	Yes
Number of handles included	1 pc(s)
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Voice codecs	G.722, G.729, AGC, G.729A, AJB, PLC, G.711Mu, VAD, G.711a, G.723.1, G.726, iLBC, CNG, OPUS
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	3 W
Lines quantity	2 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	2
Sustainability certificates	RoHS, REACH
Networking standards	IEEE 802.3af, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	189 mm
Width	188 mm
Height	162 mm
Package depth	210 mm
Package width	213 mm
Package height	103 mm