Yealink SIP-T48U Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Delete all custom screen saver images:
screensaver.delete = http://localhost/all
Delete a custom screen saver image (for example, Screencapture.jpg):
screensaver.delete = http://localhost/Screencapture.jpg
Permitted
Values
http://localhost/all or http://localhost/name.(jpg/png/bmp/jpeg)
Default
Blank
Supported
Devices
All color screen phones
Parameter
screensaver.xml_browser.url <y0000000000xx>.cfg
Description
It configures the access URL of the screen saver XML file.
Example:
screensaver.xml_browser.url = http://192.168.10.25/ScreenSaver.xml
During the auto provisioning, the phone connects to the HTTP provisioning server “192.168.10.25”,
and downloads the screen saver XML file “ScreenSaver.xml”.
Note: For color screen phones, it works only if "screensaver.type" is set to 2 (Server XML).
Permitted
Values
URL within 511 characters
Default
Blank
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U/CP920:
Settings > Preference > XML Browser URL
Other Phones:
Settings > Preference > Screensaver Type (Server XML) > XML Browser URL
Parameter
screensaver.clock_move_interval <y0000000000xx>.cfg
Description
It configures the interval (in seconds) for the phone to move the clock and icons when the screen
saver starts.
Note: It works only if "screensaver.display_clock.enable" is set to 1 (Enabled).
Permitted
Values
Integer from 5 to 1200
Default
600
Supported
Devices
All color screen phones
Parameter
screensaver.picture_change_interval <y0000000000xx>.cfg
Description
It configures the interval (in seconds) for the phone to change the picture when the screen saver
starts.
Note: It works only if “screensaver.type” is set to 1 (Upload Picture) and the parameter “screensaver-
.upload_url” should be configured in advance.
Permitted
Values
Integer from 5 to 1200
Default
60
Supported
Devices
All color screen phones

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