Yealink T48S Series User Manual

Phone Keys
Menu.
Turns Headset Off/On.
Turns Speakerphone Off/On.
Mutes/Unmutes Speaker.
Holds/Resumes a Call
Transfers a Call.
Connects to Voicemail.
Left/Right Selects Accounts or Call Lists
Up/Down Selects Contacts or Entries
Adjusts the Volume
Confirms Actions. Answers Incoming Calls.
Cancels Actions. Rejects Incoming Calls.

Yealink T48S Series Specifications

General

Local Phonebook	Up to 1000 entries
Display	7-inch color LCD touch screen with 800 x 480 resolution
Audio Features	HD handset, HD speaker
Network	Dual-port Gigabit Ethernet
Bluetooth	Yes, via USB Dongle (BT40/BT41)
USB Port	1 x USB 2.0
Headset Support	RJ9 headset port
PoE	IEEE 802.3af
Protocols	SIP v1 (RFC2543), v2 (RFC3261)
Voice Codecs	Opus, G.722, G.711(A/µ), G.729AB, G.726, iLBC
Network Features	IPv4/IPv6
Connectivity	Dual Gigabit Ethernet ports, USB
Call Features	Call hold, call waiting, call forward, call return, call transfer
Security	HTTPS, SRTP, TLS, 802.1X
Wi-Fi	Yes, via USB Dongle (WF40/WF50)
Power Adapter	Optional, 5V/2A
Stand	Two adjustable angles
Languages	English, German, French, Spanish, Italian, Russian
Dimensions	266 mm x 226 mm x 185 mm x 54 mm