Yealink SIP-T31G Administrator's Guide

Administrator’s Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
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Note: You need to configure parameters “account.X.anonymous_call_oncode” and “accoun-
t.X.anonymous_call_offcode” to activate and deactivate the server-side anonymous call feature.
Permitted
Values
0-Disabled, the phone will perform the anonymous call feature on server-side and locally. If the
anonymous call feature is enabled on the phone, the phone will carry the Anonymous attribute in the
From header of the INVITE message.
1-Enabled, the phone will perform the anonymous call feature on server-side only. The phone will not
carry the Anonymous attribute in the From header of the INVITE message even if the anonymous call
feature is enabled on the phone.
Default
Blank
Parameter
account.X.anonymous_call_oncode
[1]
<MAC>.cfg
Description
It configures the anonymous call on code.
The phone will send the code to activate the anonymous call feature on server-side when you activate
it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Code > On Code
Phone UI
Menu > Features > Anonymous Call > On Code
Parameter
account.X.anonymous_call_offcode
[1]
<MAC>.cfg
Description
It configures the anonymous call off code.
The phone will send the code to deactivate the anonymous call feature on server-side when you deac-
tivate it on the phone.
Permitted
Values
String within 32 characters
Default
Blank
Web UI
Account > Basic > Send Anonymous Code > Off Code
Phone UI
Menu > Features > Anonymous Call > Off Code
[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.
Call Number Filter
Call number filter feature allows IP phone to filter designated characters automatically when dialing.
Topic
Call Number Filter Configuration
Call Number Filter Configuration
The following table lists the parameter you can use to configure call number filter.
Parameter
features.call_num_filter <y0000000000xx>.cfg
Description
It configures the characters the phone filters when dialing.
If the dialed number contains configured characters, the phone will automatically filter these char-

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