Yealink SIP-T31G Administrator's Guide

Audio Features
184
Parameter
features.dtmf.replace_tran <y0000000000xx>.cfg
Description
It enables or disables the phone to send designated DTMF sequences for transfer function when
pressing the Tran/Transfer soft key or TRAN/TRANSFER key.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Features > General Information > DTMF Replace Tran
Parameter
features.dtmf.transfer <y0000000000xx>.cfg
Description
It configures the DTMF sequences to be transmitted to perform call transfer.
Valid values are: 0-9, *, # and A-E.
Note: It works only if “features.dtmf.replace_tran” is set to 1 (Enabled).
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Features > General Information > Tran Send DTMF
Local DTMF Tone
Local DTMF tone allows the phones to play a local DTMF tone during an active call. If this feature is enabled, you
can hear the DTMF tone when pressing the IP phone’s keypad during a call.
Topic
Local DTMF Tone Configuration
Local DTMF Tone Configuration
The following table lists the parameter you can use to configure the local DTMF tone.
Parameter
features.play_local_dtmf_tone_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to play a local DTMF tone.
Permitted
Values
0-Disabled
1-Enabled, you can hear the DTMF tone when pressing the phone’s keypad during a call.
Default
1
Web UI
Features > General Information > Play Local DTMF Tone
Voice Quality Monitoring (VQM)
Voice quality monitoring feature allows the phones to generate various quality metrics for listening quality and con-
versational quality. These metrics can be sent between the phones in RTCP-XR packets. These metrics can also be
sent in SIP PUBLISH messages to a central voice quality report collector. Yealink phones support two mechanisms
for voice quality monitoring: RTCP-XR and VQ-RTCPXR.
Topics
RTCP-XR
VQ-RTCPXR

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