Yealink SIP-T31G Administrator's Guide

Phone Customization
220
Time Zone Time Zone Name Time Zone Time Zone Name
+1 Netherlands(Amsterdam) +14 Kiribati
+1 Namibia(Windhoek)
NTP Settings
You can set an NTP time server for the desired area as required. The NTP time server address can be offered by
the DHCP server or configured manually.
Topic
NTP Configuration
NTP Configuration
The following table lists the parameters you can use to configure the NTP.
Parameter
local_time.manual_ntp_srv_prior <y0000000000xx>.cfg
Description
It configures the priority for the phone to use the NTP server address offered by the DHCP server.
Permitted
Values
0- High (use the NTP server address offered by the DHCP server preferentially)
1- Low (use the NTP server address configured manually preferentially)
Default
Value
0
Web UI
Settings > Time&Date > NTP by DHCP Priority
Parameter
local_time.dhcp_time <y0000000000xx>.cfg
Description
It enables or disables the phone to update time with the offset time offered by the DHCP server.
Note: It is only available to offset from Greenwich Mean Time GMT 0.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Settings > Time&Date > DHCP Time
Phone UI
Color Screen Phones:
Menu > Basic > Time & Date > DHCP Time
Black-and-white Screen Phones:
Menu > Settings > Basic Settings > Time&Date > DHCP Time
Parameter
local_time.ntp_server1 <y0000000000xx>.cfg
Description
It configures the IP address or the domain name of the primary NTP server.
Permitted
Values
String within 99 characters
Default
cn.pool.ntp.org
Web UI
Settings > Time&Date > Primary Server
Phone UI
Color Screen Phones:
Menu > Basic > Time & Date > General > SNTP Settings > NTP Server1
Black-and-white Screen Phones:

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