Yealink SIP-T48S User Manual

Customizing Your Phone
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Customizing Your Phone
You can customize your SIP-T48S IP phone by personally configuring certain settings, for
example, wallpaper, time & date and ring tones. You can add contacts to the phone’s local
directory manually or from call history. You can also personalize different ring tones for different
callers.
This chapter provides basic operating instructions for customizing your phone. Topics include:
 General Settings
 Audio Settings
 Contact Management
 Call History Management
 Search Source List in Dialing
 System Customizations
If you require additional information or assistance with your new phone, contact your system
administrator.
General Settings
Wallpaper
You can customize the wallpaper of the SIP-T48S IP phone, and can change the wallpaper image
via phone user interface or web user interface. You can also upload custom pictures as
wallpaper images via web user interface.
The SIP-T48S IP phone supports the file format of pictures in the following table:
Format
Resolution
File Size
*.jpg/*.png/*.bmp
≤2.0 megapixels
2MB of space should be reserved for the phone

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