Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
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If your phone is idle again for a specified period of time, the screen saver will start again. The
time & date and certain feature status icons (e.g., a new text message, auto answer, DND) will
also display on the screen saver. For more information on the icons, refer to Icon Instructions on
page 3. You can configure the phone whether to display the time & date on the screen saver or
not.
You can configure the screen saver of SIP-T48S IP phone, and upload custom pictures to set up
a screen saver of your picture via web user interface. You can configure the screen saver wait
time, screen saver type and screen saver display clock via phone user interface or web user
interface.
The SIP-T48S IP phone supports the file format of custom pictures in the following table:
Format
Resolution
File Size
*.jpg/*.png/*.bmp
≤2.0 megapixels
2MB of space should be reserved for the phone
Uploading the Custom Picture via Web User Interface
To upload a custom picture via web user interface:
1. Click on Settings->Preference.
2. Select Custom from the pull-down list of Screensaver Type.
3. In the Upload Screensaver field, click Browse to locate the custom picture from your local
system, and then click Upload.

Yealink SIP-T48S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Display diagonal	7 \
Display resolution	800 x 480 pixels
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Front camera	No
Voice codecs	CNG, G.711Mu, G.711a, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Keypad number of keys	42
Security algorithms	AES
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, HTTPS
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	225 mm
Width	266 mm
Height	185 mm
Package depth	263 mm
Package width	324 mm
Package height	128 mm