Yealink SIP-T31G Administrator's Guide

Advanced Features
464
Note: If both Call-Info header and Alert-Info header (defined by the parameter "account.X.alert_info")
are configured, the Call-Info header has a higher priority than the Alert-Info header.
Permitted
Values
String within 256 characters
Default
Blank
[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.
Incoming Intercom Configuration
The IP phone can process incoming calls differently depending on settings.
The following table lists the parameters you can use to configure incoming intercom.
Parameter
features.intercom.allow <y0000000000xx>.cfg
Description
It enables or disables the phone to answer an incoming intercom call.
Permitted
Values
0-Disabled, the phone will handle an incoming intercom call like a normal incoming call.
1-Enabled, the phone will automatically answer an incoming intercom call.
Default
1
Web UI
Features > Intercom > Intercom Allow
Phone UI
Menu > Features > Intercom > Intercom Allow
Parameter
features.intercom.mute <y0000000000xx>.cfg
Description
It enables or disables the phone to mute the microphone when answering an intercom call.
Note: It works only if “features.intercom.allow” and "features.allow_mute" are set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, the microphone is muted for intercom calls, and then the other party cannot hear you.
Default
0
Web UI
Features > Intercom > Intercom Mute
Phone UI
Menu > Features > Intercom > Intercom Mute
Parameter
features.intercom.tone <y0000000000xx>.cfg
Description
It enables or disables the phone to play a warning tone when answering an intercom call.
Note: It works only if “features.intercom.allow” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Features > Intercom > Intercom Tone
Phone UI
Menu > Features > Intercom > Intercom Tone
Parameter
features.intercom.barge <y0000000000xx>.cfg
Description
It enables or disables the phone to answer an incoming intercom call while there is already an active
call on the IP phone.
Note: It works only if “features.intercom.allow” and "call_waiting.enable" are set to 1 (Enabled) and

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