•    Yealink Optima HD voice
•    Gigabit
•    USB 2.0
•    Opus* codec support
•    Up to 6 SIP accounts
•    Paper label free design
•    PoE support
•    Headset, EHS support
•    Supports expansion modules

Audio Features
•    HD voice: HD handset, HD speaker
•    Wideband codec: Opus*, G.722
•    Narrowband codec: Opus*, G.711(A/U), G.723.1, G.729, G.729AB, G.726, iLBC
•    DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
•    Full-duplex hands-free speakerphone with AEC
•    VAD, CNG, AEC, PLC, AJB, AGC
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
•    3-way conferencing
•    Direct IP call without SIP proxy
•    Ring tone selection/import/delete
•    Set date time manually or automatically
•    Dial plan
•    XML Browser
•    Action URL/URI
•    Integrated Screenshots
•    RTCP-XR
Directory
•    Loal phonebook up to 1000 entries
•    Black list
•    XML/LDAP remote phonebook
•    Intelligent search method
•    Phonebook search/import/export
•    Call history: dialed/received/missed/forwarded
IP-PBX Features
•    Busy Lamp Field (BLF)
•    Bridged Line Apperance(BLA)
•    Anonymous call, anonymous call rejection
•    Hot-desking
•    Message Waiting Indicator (MWI)
•    Voice mail
•    Call park, call pickup
•    Intercom, paging
•    Music on hold
•    Call completion
•    Call recording
Display and Indicator
•    3.66" 240x120-pixel graphical LCD with backlight
•    LED for call and message waiting indication
•    Dual-color (red or green) illuminated LEDs for line status information
•    Wallpaper
•    Intuitive user interface with icons and soft keys
•    National language selection
•    Caller ID with name, number and photo
Feature keys
•    21 line keys with LED
•    21 line keys can be programmed up to 15 various features (3-page view)
•    5 features keys: message, headset, mute, redial, hands-free speakerphone
•    4 context-sensitive “soft” keys
•    6 navigation keys
•    2 Volume control keys
•    Illuminated message key
•    Illuminated headset key
•    Illuminated hands-free speakerphone key
Interface
•    Dual-port Fast Ethernet
•    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 2
Other Physical Features
•    Stand with 2 adjustable angles
•    Wall mountable (optional)
•    External universal AC adapter (optional): AC 100~240V input and DC 5V/1.2A output
•    Power consumption (PSU): 1.17~3.32W
•    Power consumption (PoE): 1.60~5.94W
•    Dimension(W*D*H*T): 265mm x 210mm x 170.5mm x 53.5mm
•    Operating humidity: 10~95%
•    Operating temperature: -10~50°C

Manufacturer Warranty

1 Year Limited Warranty