Yealink SIP-T31G Administrator's Guide

Administrator’s Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
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Web UI
Account > Advanced > Subscribe Register
Parameter
phone_setting.disable_account_without_username.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to disable the account whose username is empty.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
account.X.register_expires_overlap
[1]
<MAC>.cfg
Description
It configures the renewal time (in seconds) away from the registration lease.
Permitted
Values
Positive integer and -1
Default
-1
Parameter
account.X.subscribe_expires_overlap
[1]
<MAC>.cfg
Description
It configures the renewal time (in seconds) away from the subscription lease.
Permitted
Values
Positive integer and -1
Default
-1
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T33P/T33G, X=1-4; for
T40P/T40G/T23P/T23G, X=1-3; for T31P/T31G/T31/T21(P) E2, X=1-2; for T30P/T30/T19(P) E2/CP920, X=1.
[2]
If you change this parameter, the phone will reboot to make the change take effect.
Outbound Proxy in Dialog
An outbound proxy server can receive all initiating request messages and route them to the designated destination.
If the device is configured to use an outbound proxy server within a dialog, all SIP request messages from the
device will be sent to the outbound proxy server as a mandatory requirement.
Note: To use this feature, make sure the outbound server has been correctly configured on the device. For more information
on how to configure the outbound server, refer to Server Redundancy.
Topic
Outbound Proxy in Dialog Configuration
Outbound Proxy in Dialog Configuration
The following table lists the parameter you can use to configure the outbound proxy in dialog.
Parameter
sip.use_out_bound_in_dialog <y0000000000xx>.cfg
Description
It enables or disables the phone to send all SIP requests to the outbound proxy server mandatorily in
a dialog.
Note: It works only if “account.X.outbound_proxy_enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled, only the new SIP request messages from the phone will be sent to the outbound proxy
server in a dialog.
1-Enabled, all the SIP request messages from the phone will be sent to the outbound proxy server in
a dialog.

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