Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
391
Description
It enables or disables the DND feature synchronization for account X.
Note: The value configured by this parameter takes precedence over that configured by the parameter
"features.dnd.feature_key_sync.enable". It works only if “account.X.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
Blank
Supported
Devices
All phones except T48G, T46G, T42G, T41P, T29G and CP920
Parameter
features.dnd.feature_key_sync.local_processing.enable <y0000000000xx>.cfg
Description
It enables or disables the local DND when DND feature synchronization is enabled.
Note: It works only if “features.feature_key_sync.enable” and “features.dnd.feature_key_sync.enable”
are set to 1 (Enabled). The value configured by the parameter “account.X.features.dnd.feature_key_
sync.local_processing.enable” takes precedence over that configured by this parameter.
Permitted
Values
0-Disabled, DND is performed on the server side only.
1-Enabled, DND is performed on both the server side and locally.
Default
0
Parameter
account.X.features.dnd.feature_key_sync.local_processing.enable
[1]
<MAC>.cfg
Description
It enables or disables the local DND when DND feature synchronization is enabled.
Note: It works only if “features.feature_key_sync.enable” and “features.dnd.feature_key_sync.enable”
are set to 1 (Enabled).
Permitted
Values
0-Disabled, DND is performed on the server side only.
1-Enabled, DND is performed on both the server side and locally.
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/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.
Multiple Call Appearances
You can enable each registered line to support multiple concurrent calls. For example, you can place one call on
hold, switch to another call on the same registered line, and have both calls displayed.
You can set the maximum number of concurrent calls per line key on all-lines basis or a per-line basis. For
example, if you specify 3 concurrent-calls for account 1, you can only have three call appearances on a cor-
responding line key. The additional incoming calls will be rejected.
Note: The number of concurrent calls applies to all line keys. For example, if three line keys are associated with an account,
you can have three call appearances per line key.
Topic
Multiple Call Appearances Configuration
Multiple Call Appearances Configuration
You can specify the maximum concurrent calls per line key.
The following table lists the parameters you can use to configure multiple call appearances.

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