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Specifications
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Description
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Audio Features
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• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Acoustic Shield
• Smart Noise Filtering
• Audio codec: AMR-WB (optional), G.722
• Narrowband codec: AMR-NB (optional), PCMU (G.711μ), PCMA (G.711A), G.723.1, G.729, G.729A, G.729B, 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
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Display and Indicator
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• 5.5" 960 x 480 resolution screen
• 16 bit depth color
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status information
• Intuitive user interface with icons and soft keys
• Multilingual user interface
• Caller ID with name, number, and photo
• Wallpaper
• Screensaver
• Supports both dark and light themes
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Phone Features
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• 16 VoIP accounts
• One-touch speed dial, hotline, mute, DND
• Call hold, call forward, call waiting, call transfer
• Group listening
• Emergency call
• Redial, call return, auto answer
• 10-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
• RTCP-XR
• XML Browser, XML Push
• Custom DSS Key
• Accessibility features
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Corded-Cordless Phone (via DECT Dongle DD10K)
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• Up to 4 DECT cordless handsets
• Up to 4 concurrent calls
• Support Yealink W73H/W53H/W56H/W59R/DDPhone/CP930W
• Slave Handset for Master Deskset
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Directory
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• Local phonebook up to 1000 entries
• Blocklist
• XML/LDAP remote phonebook
• Smart dialing
• Phonebook search/import/export
• Call history: all records/dialed/received/missed/forwarded
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IP-PBX Features
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• Busy Lamp Field (BLF), Bridged Line Appearance (BLA)
• Anonymous call, anonymous call rejection
• Message Waiting Indicator (MWI)
• Voice messages, call parking
• Call pickup, intercom, multicast
• Music on hold
• Call recording, mobile office, chief assistant
• Server-based recording function
• Visual mailbox user interface
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Feature keys
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• 12 linekeys with LED buttons (up to 60 dsskeys, 5 pages )
• 4 touch buttons: message, headset, mute, pagination ( mute/headset/pagination button with indicator light)
• 4 function keys: call hold, call transfer, redial, hands-free
• 2 volume adjustment buttons
• 6 navigation keys
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Interface
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• Dual-port Gigabit Ethernet
• 2 x USB port (Type-USB A, Type-USB C)
- USB flash drive
- Connecting a USB headset
- Connecting to the color screen expansion station
- Wireless Headset Adapter EHS40
•1 x Security keyhole
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port
• 1 x 5V power port
• Dual USB ports (2.0 compliant)
- Support Yealink Bluetooth headset BH71/BH71 Workstation/BH71 Workstation Pro/BH72/BH76/UH38 through BT51
- DECT wireless headset (Yealink WH62 Portable/WH63 Portable)
- USB call recording through USB flash drive
- USB headset
- Expansion Module EXP55
- Wireless Headset Adapter EHS40
• USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone/wireless headset UH38, USB connectivity to Yealink wired headset UH34/UH36/UH37:
- Basic functions: answer/end, call mute
- Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple call control
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Management
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• 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
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log
• Support Yealink Device Management Platform (YDMP/YMCS)
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Network and Security
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• Built-in Dual-Band Wi-Fi:
- Network standard: IEEE802.11a/b/g/n/ac/ax
- Frequency band: 2.4GHz/5.0GHz
• Built-in Bluetooth 5.0:
- Connecting Bluetooth Headset
- Connect your phone
- Connect headphones and phone at the same time
- Connect to PC as PC peripheral
• 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
• 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
• Support SRTP protocol
• Support TLS1.3
• HTTPS Certificate Management
• Configuration file encryption (AES256)
• Supported authentication mechanisms: MD5/SHA1/SHA224/-SHA256/SHA384/SHA512
• OpenVPN, IEEE802.1X, L2TP VPN
• LLDP/CDP/DHCP VLAN
• ICE
• WPA2/WPA3
• Secure Boot
• GARP (Generic Attribute Registration Protocol)
• TEE hardware encryption solution
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Other Physical Features
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• Color: Classic Grey
• Wall mountable (optional)
• External Yealink AC adapter (optional): AC 100~240V input and DC 5V/2A output
• USB output current: 5V/1A
• Power consumption (PSU): 1.68 W-2.06 W
• Power consumption (PoE): 1.537 W-2.44 W
• Dimension (W*D*H*T): 258.73 mm*176.3 mm*224.38 mm*39.1 mm
• Operating humidity: 10 - 95%
• Operating temperature: -10 to 45°C (+14 to 113°F)
• Storage temperature: -30 to +70°C (-22 to +158°F)
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Package Features
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• Package content:
- Yealink SIP-T85W IP phone
- Handset with handset cord
- Ethernet Cable (2m CAT5E UTP Cable)
- Stand
- Quick Start Guide
- Power Adapter (Optional)
- Wall Mount Bracket (Optional)
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