Yealink SIP-T31G Administrator's Guide

Administrator’s Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
30
(Enabled) > Primary DNS
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv6 >
Static IPv6 Client > Pri.DNS
In DHCP environment:
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv6 >
DHCP IPv6 Client > Static DNS(Enabled) > Pri.DNS
Parameter
static.network.ipv6_secondary_dns
[1]
<y0000000000xx>.cfg
Description
It configures the secondary IPv6 DNS server for the wired network.
Note: It works only if “static.network.ip_address_mode" is set to 1 (IPv6) or 2 (IPv4 & IPv6). In DHCP
environment, you also need to make sure “static.network.ipv6_static_dns_enable" is set to 1 (On).
Permitted
Values
IPv6 Address
Default
Blank
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U:
Network > Basic > IPv6 Config > Static IPv6 DNS > Secondary DNS
Other Phones:
Network > Basic > IPv6 Config > Static IP Address > Secondary DNS
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > WAN Port > IPv6 > Static IP > Secondary
DNS
In DHCP environment:
Menu > Advanced (default password: admin) > Network > WAN Port > IPv6 > DHCP > Static DNS
(Enabled) > Secondary DNS
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv6 >
Static IPv6 Client > Sec.DNS
In DHCP environment:
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv6 >
DHCP IPv6 Client > Static DNS(Enabled) > Sec.DNS
Parameter
static.network.ipv6_icmp_v6.enable
[1]
<y0000000000xx>.cfg
Description
It enables or disables the phone to obtain IPv6 wired network settings via SLAAC (Stateless Address
Autoconfiguration).
Note: It works only if “static.network.ipv6_internet_port.type” is set to 0 (DHCP).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T48G, T46U, T46S, T46G, T43U, T42U, T33P, T33G, T31P,
T31G, T31, T30P, T30, T29G
Web UI
Network > Advanced > ICMPv6 Status > Active
[1]
If you change this parameter, the phone will reboot to make the change take effect.

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