Audio
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Speakerphone
Design
Product type	IP Phone
Handset type	Wired handset
Product colour	Grey
Display
Display	LED
Display diagonal	17.8 cm (7")
Display resolution	800 x 480 pixels
Touchscreen
Backlight display
Logistics data
Harmonized System (HS) code	85171800
Management features
Keypad number of keys	29
Network
Ethernet LAN interface type	Gigabit Ethernet
Ethernet LAN data rates	10,100,1000 Mbit/s
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN
Wi-Fi
Bluetooth
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95%
Packaging content
Number of handles included	1 pc(s)
Phone features
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Call waiting
Call hold
Call forwarding
Conference call
Redialing
Caller ID
Ports & interfaces
USB 2.0 ports quantity	2
Ethernet LAN (RJ-45) ports	2
Expansion module support
Power
AC adapter input voltage	100 - 240 V
Power over Ethernet (PoE)
Weight & dimensions
Width	226 mm
Depth	226 mm
Height	185 mm

With the new IP phone SIP-T48U, Yealink offers managers and professionals a dynamic solution for business communication. The phone has an attractive large touchscreen that makes switching between pages and applications quick, easy and convenient. With Yealink Optima HD Voice technology and Opus wideband codec, the T48U offers excellent audio quality and crystal-clear voice communication. In addition, the T48U has two USB ports on a phone that enables Bluetooth, Wi-Fi, USB headset and USB recording, and you can use two of these ports according to your needs. Yealink's new T4U series offers the same elegant look and feel as the T4 series, but with improvements for greater interoperability and better collaboration.

Highlights

• Easy customization and high expandability
• The Yealink Optima HD Voice technology combines the latest hardware and software with broadband technology for maximum acoustic performance
• PoE support
• Up to 16 SIP accounts
• 2 USB ports, 2 Gigabit Ethernet ports and 2 RJ9 -Ports

Product type

• Corded end device
• Ear category (ElektroG): relevant, Category 6: small IT and telecommunications technology devices, Small IT and telecommunications technology devices B2C

Telephone properties

• Headset connectivity: USB
• Number of phone book entries: 1000

Connections

• USB
• Number of LAN ports: 2

Display

• Display diagonal inches: 7 \dlash- Display diagonal cm: 17.8 cm
• Display technology: LCD
• Touch display
• Display type: Color

Power supply

• PoE standard: PoE - 802.3af
• Power supply: optional
• PoE, network

Basic features

• Color: Black
• Height: 185 mm
• Length/depth: 226 mm
• Width: 266 mm

Scope of delivery

• Yealink SIP-T48U
• Telephone handset with handset cable
• Ethernet cable
• Stand
• Quick guide