Yealink SIP-T31G Administrator's Guide

Advanced Features
460
Devices
T31G, T31, T30P, T30, T27G and CP920
Parameter
account.X.shared_line.idle_details
[1]
<y0000000000xx>.cfg
Description
It enables or disables the phone to display the basic SCA call information on the idle screen.
Note: It works only if “account.X.shared_line” is set to 1 (Shared Call Appearance).
Permitted
Values
0-Disabled
1-Enabled, users can also view the call details by long pressing the SCA line key.
Default
0
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U, T48S, T46S, T42S, T41S, T33P, T33G, T31P,
T31G, T31, T30P, T30 and T27G
[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.
Bridge Lines Appearance (BLA)
BLA allows users to share a SIP line on two or more phones. Users can monitor the specific extension (BLA num-
ber) for status changes on each IP phone. To use this feature, a BLA group should be pre-configured on the server
and one of them is specified as a BLA number.
Yealink phones support BLA using a SUBSCRIBE/NOTIFY mechanism as specified in RFC 3265. The event used
is: “dialog” for bridged line appearance subscribe and notify.
Topic
BLA Configuration
BLA Configuration
The following table lists the parameters you can use to configure BLA.
Parameter
account.X.shared_line
[1]
<MAC>.cfg
Description
It configures the registration line type.
Permitted
Values
0-Disabled
3-Draft BLA
Default
0
Web UI
Account > Advanced > Shared Line
Parameter
account.X.bla_number
[1]
<MAC>.cfg
Description
It configures the BLA number.
Note: It works only if “account.X.shared_line” is set to 3 (Draft BLA).
Permitted
Values
String within 99 characters
Default
Blank
Web UI
Account > Advanced > BLA Number
Parameter
account.X.bla.notify_with_expire.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone to add the Expires attribute to the Subscription-State header of the
BLA NOTIFY message.
Note: It works only if “account.X.shared_line” is set to 3 (Draft BLA). For teltronnic BLA, you need to set

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