The Yealink T73U PoE VoIP/SIP Phone is an all-in-one business phone that enables excellent voice communication and extended functionality. Equipped with Hall switch technology, it helps create a quieter office environment. The redesigned appearance of Yealink's new T73U makes the phone slimmer, more stylish, and aligned with modern aesthetic standards.

The sound quality of the Yealink T73U phone is high definition, making communication easier.

Yealink combines cutting-edge hardware and software with broadband technology to achieve superior acoustic performance. Its hearing aid compatible (HAC) handset helps people with hearing loss to hear sounds more clearly. The T73U supports five-page turning and up to 40 programmable buttons. In addition, the T73U can be cascaded to up to 3 expansion units. A total of 234 programmable buttons effectively saves operation time and increases office efficiency.

Yealink T73U Technical Specifications:

 Audio Features

• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Acoustic Shield
• Smart Noise Filtering
• Audio codecs: AMR-WB (optional), G.722
• Narrowband codecs: 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

User Interface

• LCD screen
• 2.8-inch 320x240 resolution screen
• Supports wallpapers and screen savers
• Incoming calls and unread message indicator lights
• Intuitive user interface
• Multilingual user interface
• Caller ID display of name, number, and photo
• Supports both dark and light themes

Phone Features

• 12 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
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date time manually or automatically
• Dial plan, action URL/URI
• XML Browser, XML Push
• RTCP-XR (RFC3611)
• Custom DSS Key
• Accessibility features

Directory

• Local phone book with up to 1,000 entries
• Blocklist
• XML/LDAP remote phone book
• Google Contacts
• Smart dialling
• Phone book search/import/export
• Call history: All records/dialled/received/missed/forwarded calls

IP-PBX Features

• Busy Lamp Field (BLF), Bridged Line Appearance (BLA)
• Anonymous call, anonymous call rejection
• Message Waiting Indicator (MWI)
• Voice messages, call park
• Call pickup, intercom, multicast
• Music on hold
• Call recording, mobile office, chief assistant
• Server-based recording function
• Visual mailbox user interface

Display and Indicator

• LED for call and message waiting indication
• Account status information red and green dual-colour indicator light
• Intuitive user interface with icons and soft keys
• Multilingual user interface
• Caller ID with name and number
• Screensaver
• Power saving

Feature Keys

• 8 linekeys with LED keys (up to 40 DSS keys, 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 control keys
• 6 navigation keys

Interface

• Dual-port Gigabit Ethernet
• WiFi through WF50 (sold separately, see accessories)
• 1 x USB 2.0 interface (phone side):
  • USB flash drive
  • Connecting a USB headset
  • Connecting to the colour screen expansion station
  • Wireless Headset Adapter EHS40 (sold separately)
  • 1 x Security keyhole
• 1 x RJ9 (4P4C) handset interface
• 1 x RJ9 (4P4C) headset jack
• 1 x 5V power port
• USB interface (compatible with 2.0):
  • Supports Bluetooth headsets via BT41/BT51 (sold separately)
  • Supports connecting Yealink Bluetooth headset BH71/BH71 Workstation/BH71 Workstation Pro/BH72/BH76 via BT51 (sold separately)
  • USB recording
  • USB headset
  • Expansion module EXP55, can support up to 3 colour screen expansion modules cascaded (sold separately)
  • Wireless Headset Adapter EHS40 (sold separately)
• Supports USB or Bluetooth connection to Yealink CP900/CP700 and UH38, USB connection to UH34/UH36/UH37 (sold separately):
  • Basic functions: answer/end/mute call
  • Advanced functions: sound quality optimisation/redial/call hold/volume adjustment/ two-way synchronisation/multi-way call control

Management

• 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
• Supports Yealink Device Management Platform (YDMP/YMCS)

Network and Security

• IPv4/IPv6
• SIP v1 (RFC2543), v2 (RFC3261)
• Call server redundancy is 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 synchronisation using SNTP
• UDP/TCP/DNS-SRV (RFC 3263)
• QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
• Supports SRTP protocol
• Transport Layer Security (TLS 1.3)
• HTTPS certificate manager
• AES encryption for configuration file (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)
• Linux 6.1 version
• TEE hardware encryption solution

Other Physical Features

• Operating environment humidity: 5% - 90%
• Operating temperature: -10 to +45°C (+14 to 113°F)
• Storage temperature: -30 to 70°C
• Supports PoE power supply (IEEE 802.3af), class 2
• Power adapter: AC 100-240V input, DC 5V/2A output
• USB output current: 5V/500mA
• Power consumption (PSU): 1.30 W-1.48 W
• Power consumption (PoE): 1.368 W-1.832 W
• Dimensions (W x D x H): 208.95 x 202.13 x 50.43 mm

Package Contents

• 1 x Yealink T73U IP phone
• 1 x 10W UK Power Supply
• 1 x Handset with handset cord
• 1 x Ethernet Cable (2m CAT5E UTP Cable)
• 1 x Stand
• 1 x Quick Start Guide

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