The Yealink SIP-T77U is a revolutionary business IP phone built for executives and professionals who demand an intuitive, high-performance communications experience. Featuring a large 7" 800x480 capacitive adjustable touchscreen, Yealink Optima HD Voice technology with AI noise cancellation, and TEE hardware encryption, the SIP-T77U delivers crystal-clear audio and enterprise-grade security in a sleek, modern form factor.
With dual USB ports supporting Bluetooth, Wi-Fi, USB headsets, and call recording, the T77U adapts to any workflow. Its 84 one-touch DSS keys and support for up to 3 EXP55 color expansion modules — reaching up to 234 total programmable buttons — make it ideal for high-volume call environments. Zero Touch Provisioning via Yealink RPS and unified T7X series firmware ensure fast, effortless deployment on Voigo Hosted PBX.
- 7" 800x480 capacitive adjustable touchscreen with dark/light theme support
- 84 one-touch programmable DSS keys (expandable to 234 with EXP55 modules)
- Supports up to 16 SIP accounts and 10-way audio conferencing
- Dual USB 2.0 ports (Type-A and Type-C) for BT, Wi-Fi, headset, or recording
- Dual Gigabit Ethernet ports with PoE support (IEEE 802.3af, Class 3)
- Yealink Optima HD Voice with AI noise cancellation and Acoustic Shield
- TEE hardware encryption with dual firmware images for enterprise-level protection
- Wi-Fi via WF50 dongle and Bluetooth via BT41/BT51 dongle
- Supports up to 3 × EXP55 color expansion modules
- Zero Touch Provisioning with unified T7X/T8X series firmware
- Display: 7" 800x480 capacitive touchscreen, adjustable, dark/light themes
- SIP Accounts: Up to 16
- Programmable Keys: 84 one-touch DSS keys (up to 234 with EXP55)
- Conferencing: Up to 10-way audio
- Network Ports: Dual Gigabit Ethernet
- Power: PoE IEEE 802.3af Class 3 or optional AC adapter
- USB: 2 × USB 2.0 (Type-A / Type-C)
- Wi-Fi: Via WF50 (V1) dongle
- Bluetooth: Via BT41 / BT51 dongle
- Expansion: Up to 3 × EXP55 color touchscreen modules
- Audio: HD Voice, Acoustic Shield, AI Noise Cancellation, HAC handset
- Security: TEE hardware encryption, TLS 1.3, SRTP, AES-256, WPA2/WPA3, Secure Boot
- Dimensions: 262.1 × 167.5 × 219.2 × 56.9 mm
- Operating Temp: -10 to +45°C
- Color: Classic Grey
Compatible Accessories
| ✓ | 7" Adjustable Capacitive Color Touchscreen Display |
| ✓ | 84 Programmable DSS Keys On-Screen |
| ✓ | Supports Up to 16 SIP Accounts |
| ✓ | Dual USB Ports for Bluetooth , Wi-Fi, or Recording |
| ✓ | TEE Hardware Encryption with Dual Firmware Backup |
