The Yealink SIP-T73U is a multifunctional business IP phone engineered to deliver excellent voice communications and extended functionality in a modern, streamlined form factor. Featuring Hall switch technology for quieter operation and a sleek redesigned appearance, the T73U supports up to 12 SIP accounts and combines Yealink's ultra-high-definition voice technology with a 2.8" color LCD display for a clear, responsive user experience.
Built for productivity and scalability, the T73U supports up to 40 programmable DSS keys across 5 pages and can cascade up to 3 EXP55 color-screen expansion modules, providing a total of 234 programmable buttons for high-volume call environments. A built-in USB port enables USB headset connectivity and call recording, while TEE hardware encryption ensures secure data storage.
- Supports up to 12 SIP accounts
- 2.8" 320x240 color LCD display with backlight
- 40 programmable DSS keys across 5 pages
- Dual Gigabit Ethernet ports
- USB port supporting USB headset and USB call recording
- Supports up to 3 cascaded EXP55 color-screen expansion modules
- TEE hardware encryption for secure data storage
- Optional Wi-Fi via WF50(V1) and Bluetooth via BT41/BT51 dongles
- PoE support (IEEE 802.3af) for simplified cabling
- Zero-touch provisioning via Yealink RPS
- Display: 2.8" 320x240 color LCD with backlight
- SIP Accounts: Up to 12
- Programmable Keys: 40 DSS keys (8 line keys, 5 pages)
- Network Ports: Dual Gigabit Ethernet
- Wi-Fi: Optional via WF50(V1) USB dongle
- Bluetooth: Optional via BT41 or BT51 USB dongle
- USB: 1 × USB 2.0 (headset, recording, expansion)
- Audio: HD Voice, Acoustic Shield, Smart Noise Filtering, Full-Duplex Speakerphone
- Power: PoE (IEEE 802.3af, Class 2) or optional AC adapter (5V/2A)
- Security: TEE hardware encryption, TLS 1.3, SRTP, AES256, WPA2/WPA3
- Dimensions: 209.0 mm × 167.5 mm × 214.8 mm × 53.4 mm
- Operating Temp: -10°C to +45°C (14°F to 113°F)
Compatible Accessories
| ✓ | 2.8" Color LCD Display with Backlight |
| ✓ | 40 Programmable DSS Keys Across 5 Pages |
| ✓ | Supports up to 12 SIP Accounts |
| ✓ | Dual Gigabit Ethernet Ports |
| ✓ | USB Port for Headset and Call Recording |
