Yealink SIP-T31G Administrator's Guide

Phone Provisioning
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If you change this parameter, the phone will reboot to make the change take effect.
Supported Provisioning Server Discovery Methods
After the phone has established network settings, it must discover a provisioning server to obtain software updates
and configuration settings.
The IP phone supports the following methods to discover the provisioning server address:
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Zero Touch: Zero Touch feature guides you to configure network settings and the provisioning server address
via the phone user interface after startup.
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PnP: PnP feature allows the phones to discover the provisioning server address by broadcasting the PnP
SUBSCRIBE message during startup.
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DHCP: DHCP option can be used to provide the address or URL of the provisioning server to phones. When the
IP phone requests an IP address using the DHCP protocol, the resulting response may contain option 66 (for
IPv4)/option 59 (for IPv6) or the custom option (if configured) that contains the provisioning server address.
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Static: You can manually configure the server address via the phone user interface or web user interface.
Topics
Zero Touch Provision Configuration
PnP Provision Configuration
DHCP Provision Configuration
Static Provision Configuration
Zero Touch Provision Configuration
The following table lists the parameters you can use to configure the Zero Touch provision.
Parameter
static.zero_touch.enable <y0000000000xx>.cfg
Description
It enables or disables the zero touch for the phone to configure the network parameters and pro-
visioning server address via the phone user interface during startup.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Settings > Auto Provision > Zero Active
Parameter
static.zero_touch.wait_time <y0000000000xx>.cfg
Description
It configures the duration time (in seconds) for the phone to display Zero Touch screen during startup.
Permitted
Values
Integer from 1 to 100
Default
5
Web UI
Settings > Auto Provision > Wait Time(1~100s)
Parameter
static.zero_touch.network_fail_wait_times <y0000000000xx>.cfg
Description
It configures the reconnection times when zero touch module fails to obtain network parameters.
Permitted
Values
Integer from 1 to 2147483646
Default
8
Parameter
static.zero_touch.network_fail_delay_times <y0000000000xx>.cfg
Description
It configures the duration time (in milliseconds) of every reconnection when zero touch module fails to
obtain network parameters.

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