Yealink SIP-T48U Administrator's Guide

Call Features
390
Default
Blank
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Features > Forward& DND > DND > AccountX > Off Code
Phone UI
Menu > Features > DND > AccountX > 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/T42U/T42G/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2.
DND Synchronization for Server-side Configuration
DND synchronization feature provides the capability to synchronize the status of the DND features between the IP
phone and the server.
If the DND is activated in phone mode, the DND status changing locally will be synchronized to all registered
accounts on the server; but if the DND status of a specific account is changed on the server, the DND status locally
will be changed.
The following table lists the parameters you can use to configure DND synchronization for server-side.
Parameter
features.feature_key_sync.enable <y0000000000xx>.cfg
Description
It enables or disables to synchronize the feature status between the IP phone and the server.
Permitted
Values
0-Disabled
1-Enabled, the phone sends a SUBSCRIBE message with event “as-feature-event”.
Default
0
Parameter
account.X.feature_key_sync.enable
[1]
<MAC>.cfg
Description
It enables or disables to synchronize the feature status between the IP phone and the server for
account X.
Note: The value configured by this parameter takes precedence over that configured by the parameter
"features.feature_key_sync.enable".
Permitted
Values
0-Disabled
1-Enabled, the phone to send a SUBSCRIBE message with event “as-feature-event”.
Default
0
Supported
Devices
All phones except T48G, T46G, T42G, T41P, T29G and CP920
Parameter
features.dnd.feature_key_sync.enable <y0000000000xx>.cfg
Description
It enables or disables the DND feature synchronization.
Note: It works only if “features.feature_key_sync.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled, server-based DND is enabled. Server and local phone DND are synchronized.
Default
1
Supported
Devices
All phones except CP920
Parameter
account.X.dnd.feature_key_sync.enable
[1]
<MAC>.cfg

Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm