Audio Features
> HD voice: HD handset, HD speaker
> Audio codec: G.722, G.711 (A/µ), G.729AB, G.723,G.726, iLBC, Opus
> DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO 
> Full-duplex hands-free speakerphone with AEC
> VAD, CNG, AEC, PLC, AJB, AGC

Video Features
> 1080p@30fps Full-HD Video call
> Video codec: H.264 High Profile, H.264, H.263
> 2 mega-pixel Camera with privacy shutter
> Horizontal field of view: 63.5°
> Vertical field of view: 37°
> Adjustable camera
> Plug and Play
 

Display and Indicator
> 8" 1280 x 800 capacitive touch screen IPS LCD
> 10 points multi-touch surface
> Screensaver and Wallpaper
> LED for call and message waiting indication
> Intuitive user interface with icons and soft keys
> National language selection
> Caller ID with name, number and photo


Phone Features
> 16 VoIP accounts
>Call hold, mute, DND
>One-touch speed dial, hotline
>Call forward, call waiting, call transfer
>Group listening, emergency call
>Redial, call return, auto answer
>Direct IP call without SIP proxy
>Ring tone selection/import/delete
>Set date time manually or automatically
>Dial plan, XML Browser, action URL/URI
>RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
>Three-way video conferencing
>Five-way audio/video mixed conferencing
>Standard HDMI output for connection to monitor
>USB ports (2.0 compliant) for media and storage applications
>USB ports (3.0 compliant) for extending camera with USB3.0 cable
>Notification Center and Control Center
>Onscreen keyboard

IP-PBX Features
>Busy Lamp Field (BLF)
>Bridged Line Appearance (BLA)
>Anonymous call, anonymous call rejection
>Remote office, hot desking
>Message Waiting Indicator (MWI)
>Voice mail, call park, call pickup
>Intercom, paging, music on hold
>Call completion, call recording

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

Feature keys
>29 one-touch DSS keys
> 8 feature keys: message,headset,mute,hold,transfer, video,redial,speakerphone
> Volume control keys
> Illuminated mute key
> Illuminated headset key
> Illuminated hands-free speakerphone key

Interface
>Dual-port Gigabit Ethernet
> Built-in Wi-Fi (2.4GHz & 5GHz, 802.11a/b/g/n)
> Built-in Bluetooth 4.0+ EDR
> 1x USB port (2.0 compliant)
> 1x USB port (3.0 compliant, for camera/USB3.0 cable)
> 1x RJ9 (4P4C) handset port
> 1x RJ9 (4P4C) headset port
> 1x HDMI output port
>1x Security lock port

Management
>Configuration: browser/phone/auto-provision
> Auto provision via FTP/TFTP/HTTP/HTTPS for mass deployment
> Auto-provision with PnP
> Zero-sp-touch, TR-069
> Phone lock for personal privacy protection
> Reset to factory, reboot
> Package tracing export, system log

Other Physical Features
>Yealink power adapter: AC 100~240V input and DC 12V/2A output
> Power consumption : 7.8 W-12 W
> Dimension (W*D*H*T): 273mm*226mm*285mm*42 mm
> Operating humidity: 10~95 percent
> Operating temperature: -10~50°C

Network and Security
> IPv4/IPv6
> SIP v1 (RFC2543), v2 (RFC3261)
> Call server redundancy supported
> NAT traversal: 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
> UDP/TCP/DNS-SRV(RFC 3263)
> QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
> SRTP 
> Transport Layer Security (TLS)
> HTTPS certificate manager
> AES encryption for configuration file
> Digest authentication using MD5/MD5-sess
> OpenVPN, IEEE802.1X

Package Features
>Qty/CTN: 5 PCS
> N.W/CTN: 12.9 Kg
> G.W/CTN: 14.0 Kg
> Giftbox size: 336mm*364mm*112mm
> Carton Meas: 587mm*348mm*376mm