Yealink SIP-T31G Administrator's Guide

Advanced Features
488
Values 1-Enabled
Default
0
Parameter
account.X.sub_fail_retry_interval
[1]
<MAC>.cfg
Description
It configures the interval (in seconds) for the phone to retry to re-subscribe when subscription fails.
Permitted
Values
Integer from 0 to 3600
Default
30
Parameter
account.X.subscribe_mwi_to_vm
[1]
<MAC>.cfg
Description
It enables or disables the phone to subscribe to the message waiting indicator for the voice mail num-
ber.
Note: It works only if “account.X.subscribe_mwi” is set to 1 (Enabled) and “voice_mail.number.X” is
configured.
Permitted
Values
0-Disabled, the phone will subscribe to the message waiting indicator to a specific account.
1-Enabled
Default
0
Web UI
Account > Advanced > Subscribe MWI to Voice Mail
Parameter
voice_mail.number.X
[1]
<MAC>.cfg
Description
It configures the voice mail number.
Permitted
Values
String within 99 characters
Default
Blank
Web UI
Account > Advanced > Voice Mail
Phone UI
Menu > Message > Voice Mail > Set Voice Mail Code
Parameter
account.X.display_mwi.enable
[1]
<MAC>.cfg
Description
It enables or disables the MWI alert to indicate that you have an unread voice mail message.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Account > Advanced > Voice Mail Display
Parameter
features.voice_mail_alert.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to pop up the message when receiving the same amount of new
voicemails.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
features.voice_mail_key_lamp_field.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to subscribe to the message waiting indicator for the voice mail num-
ber when configuring a Voice Mail dsskey.

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