Yealink SIP-T48U Administrator's Guide

Phone Customization
205
Default
1
Supported
Devices
All color screen phones
Web UI
Settings > Preference > Screensaver Display Clock (not configurable when the Screensaver Type is
set to Server XML)
Phone UI
Menu > Basic > Display > Screensaver > Display Clock (not configurable when the Screensaver Type
is set to Server XML)
Parameter
screensaver.type <y0000000000xx>.cfg
Description
It configures the type of screen saver to display.
Permitted
Values
0-System, the LCD screen will display the built-in picture.
1-Custom, the LCD screen will display the custom screen saver images (configured by the parameter
“screensaver.upload_url”). If multiple images are uploaded, the phone will display all images altern-
ately. The time interval is configured by the parameter “screensaver.picture_change_interval”.
2-Server XML, the LCD screen will display XML items (configured by the parameter “screensaver-
.xml_browser.url”) when the screen saver starts.
Default
0
Supported
Devices
All color screen phones
Web UI
Settings > Preference > Screensaver Type
Phone UI
Menu > Basic > Display > Screensaver > Screensaver Type
Note: It is configurable only if you have uploaded custom image files to the phone.
Parameter
screensaver.upload_url <y0000000000xx>.cfg
Description
It configures the access URL of the custom screen saver image.
Example:
screensaver.upload_url = http://192.168.10.25/Screencapture.jpg
During auto provisioning, the phone connects to the HTTP provisioning server “192.168.10.25”, and
downloads the screen saver image “Screencapture.jpg”.
If you want to upload multiple screen saver images to the phone simultaneously, you can configure as
follows:
screensaver.upload_url = http://192.168.10.25/Screencapture.jpg
screensaver.upload_url = http://192.168.10.25/Screensaver.jpg
Permitted
Values
URL within 511 characters
Default
Blank
Supported
Devices
All color screen phones
Web UI
Settings > Preference > Screensaver Type (Custom)/Screensaver Type (Server XML) > Upload
Screensaver
Parameter
screensaver.delete <y0000000000xx>.cfg
Description
It deletes the specified or all custom screen saver images.
Example:

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