Yealink SIP-T48S Quick Start Guide

ENGLISH
2
3. Connect the USB flash drive, as shown below:
4. Connect the network and power, as shown below:
You have two options for network and power connections. Your system administrator will advise you which one to use.
Note: The IP phone should be used with Yealink original power adapter (5V/2A) only. The use of the third-party power adapter may
cause the damage to the phone. If you are connecting a PC to your phone, we recommend that you use the Ethernet cable
provided by Yealink.
If inline power (PoE) is provided, you don’t need to connect the power adaper. Make sure the hub/switch is PoE-compliant.
Note: The USB port can also be used to connect the Bluetooth USB dongle BT41 or Wi-Fi USB dongle WF40.
For more information on how to use the BT41 and WF40, refer to Yealink Bluetooth USB Dongle BT41 User Guide and Yealink
Wi-Fi USB Dongle WF40 User Guide.
PoE Hub/Switch
A
AC Power Option
PC Connection
(Optional)
Power Adapter
(DC 5V)
B
PoE ( Power over
Ethernet ) Option
PC Connection
(Optional)
IEEE 802.3af compliant
PC
PC

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