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The SIP-T48G is Yealink’s most recent innovative IP Phone for a fast-changing world. Designed specifically for both local and international use by business, industry and commerce, it incorporates a large touch panel that makes switching between different screens and applications swift, easy and convenient. Yealink’s Optima HD technology very carefully creates the impression that you are sitting virtually face-to-face opposite the person at the other end of the call. The T48G is also built for the Gigabit Ethernet and facilitates very rapid call handling and the application of accessories such as a Bluetooth USB Dongle, plus wired and wireless headsets. The new IP Phone supports impressive productivity-enhancing features too which make it the natural and obvious efficiency tool for today’s busy executives and professionals.




  • Flagship model for the T4 IP Phone Series


  • Yealink Optima HD voice


  • Dual port Gigabit Ethernet


  • Huge 7" 800 x 480 pixel TFT touch screen color display with backlight


  • Built-in a USB port to support Bluetooth headset (Through USB Dongle)


  • Up to 6 SIP accounts


  • Paper label free design


  • PoE support


  • EHS support for Headsets


  • Supports EXP40 LCD Expansion Module


  • Wall mountable


Audio Features
HD Optima voice: HD handset, HD speaker
Codecs: G.722, G.711(A/µ), G.723, G.729AB, G.726, GSM
DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
Full-duplex hands-free speakerphone with AEC
Phone Features
6 VoIP accounts
Call hold, mute, DND
One-touch speed dial, hotline
Call forward, call waiting, call transfer
Group listening, SMS, emergency call
Redial, call return, auto answer
Call history: dialed, received, missed, forwarded
3-way confernecing
Direct IP call without SIP proxy
Ring tone selection/import/delete
Set date time manually or automatically
Dial plan, XML Browser, action URL
Local phonebook up to 1000 entries
BroadSoft contacts: custom, enterprise, personal, common, search, speed dial
IP-PBX and BroadSoft Features
Busy Lamp Field (BLF), BLF list
Bridged Line Apperance(BLA)/SCA
Anonymous call, Anonymous call rejection
DND & forward synchronization
N-Way Calling, remote office
Message Waiting Indicator (MWI)
BroadWorks Anywhere
BroadSoft call center features
Voice mail, call park, call pickup
Intercom, paging, music on hold
Display and Indicator
7" 800 x 480-pixel color touch screen display with backlight
24-bit depth color
Multi-screen operation
Caller ID with name, number and photo
Feature keys
29 DSS programmable keys for efficient paperless operation
7 features keys: message, headset, hold, mute, transfer, redial, hands-free speakerphone
+/- Rocker volume control key
Dual-port Gigabit Ethernet
Built-in a USB port, support Bluetooth headset (Through USB Dongle)
1xRJ9 (4P4C) handset port
1xRJ9 (4P4C) headset port
1XRJ12 (6P6C) EXT port:
Supports up to 6 Expansion Modules for an attendant console application
Power over Ethernet (IEEE 802.3af), Class 3
Other Physical Features
Stand with 2 adjustable angles
Wall mountable
External universal AC adapter (optional):
AC 100~240V input and DC 5V/2A output
Configuration: browser/phone/auto-provision
Auto provision via FTP/TFTP/HTTP/HTTPS for mass deployment
Auto-provision with PnP
BroadSoft device management
Zero-sp-touch, TR-069, SNMP
Provisioning server redundancy supported
Network and Security
SIP v1 (RFC2543), v2 (RFC3261)
NAT transverse: STUN mode
Proxy mode and peer-to-peer SIP link mode
IP assignment: static/DHCP/PPPoE
HTTP/HTTPS web server
Time and date synchronization using SNTP
QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
SRTP for voice
Transport Layer Security (TLS)
HTTPS certificate manager
AES encryption for configuration file
Digest authentication using MD5/MD5-sess
OpenVPN, IEEE802.1X
Barcode # 6938818300828
Brand Yealink
Shipping Weight 1.7000kg
Shipping Width 0.270m
Shipping Height 0.140m
Shipping Length 0.330m
Shipping Cubic 0.012474000m3
Manufacturer Warranty
1 Year Limited Warranty


By: on 10 April 2015
Solid devices. Expensive, but value for money. Very easy to set up and speaker quality is just awesome. Never gave me trouble since installed and configured.

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