Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
485
Permitted
Values
0-Disabled
1-Enabled, the phone will subscribe to the value of the Voice Mail dsskey from the server. When there
are unread voice messages, the dsskey LED indicator flashes or the dsskey icon indicates the num-
ber of unread messages.
Default
0
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U, T48S, T46S, T42S, T41S and T27G
Related
Parameters
phone_setting.mail_power_led_flash_enable
features.voice_mail_popup.enable
[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 T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Short Message Service (SMS)
Yealink phones (except CP920 phones) support short message service (SMS). It allows users to send and receive
a text message on the support server.
By default, SMS is enabled. You can use SMS at the path: Menu > Message > Text Message. You can also disable
SMS.
Topic
SMS Configuration
SMS Configuration
The following table lists the parameter you can use to configure SMS.
Parameter
features.text_message.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to send and receive a text message.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
All phones except CP920
XML Browser
XML browser simply means that the phone screen display can be managed by external applications. The XML
browser feature allows users to develop and deploy custom services which meet user’s functional requirements on
the server. Users can customize practical applications, such as weather report, stock information, Google search,
news service, and so on.
To use the XML browser feature, you must configure an XML browser key in advance.
For more information on XML browser, refer to Yealink IP Phones XML Browser Developer's Guide.
Topic
XML Browser Configuration
XML Browser Configuration
The following table lists the parameters you can use to configure XML browser.

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