Yealink SIP-T31G Administrator's Guide

Account Settings
300
Parameter
account.X.unregister_on_reboot
[1]
<MAC>.cfg
Description
It enables or disables the phone to unregister first before re-registering account X after a reboot.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Account > Advanced > Unregister When Reboot
Parameter
account.X.sip_server_type
[1]
<MAC>.cfg
Description
It configures the type of SIP server.
Permitted
Values
0-Default
2-BroadSoft (It works only if “bw.enable" is set to 1 (Enabled))
8-Genesys
10-Genesys Advanced
12-Star2Star
Default
0
Web UI
Account > Advanced > SIP Server Type
Parameter
account.X.gruu.enable
[1]
<MAC>.cfg
Description
It enables or disables the Globally Routable User Agent URI (GRUU) feature.
GRUU provides a unique user-agent identifier to a specific user-agent (UA) instance. It is required in
which the REFER request must be routed to the correct UA instance, for example, a call transfer.
Permitted
Values
0-Disabled
1-Enabled, the phone will add +sip.instance attribute with the public GRUU to the Contact header of
the REGISTER message.
For example:
Contact: <sip:1012@10.2.20.160:5060>;+sip.instance="<urn:uuid:5acd54e8-f197-57e2-aa42-
5f4a5d04367c>"
Default
0
Parameter
sip.reg_surge_prevention
[2]
<y0000000000xx>.cfg
Description
It configures the waiting time (in seconds) for account register after startup.
Permitted
Values
Integer from 0 to 60
Default
0
Web UI
Network > Advanced > Registration Random > Registration Random (0~60s)
Parameter
account.X.subscribe_register
[1]
<MAC>.cfg
Description
It enables or disables the phone to subscribe to the registration state change notifications.
Permitted
Values
0-Disabled
1-Enabled
Default
0

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