Yealink SIP-T77U IP Phone | 20-Line, 7" Adjustable Touch Screen-1301011
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Common issues and fixes
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About this product
The Yealink SIP-T77U is a premium wired desk phone designed for executives and C-level staff who require the highest performance, visual space, and enterprise-grade security.
Key Features:
• 7" adjustable multi-touch screen with high-resolution color display
• Supports up to 20 SIP accounts
• Trusted Execution Environment (TEE) hardware encryption for strongest defense against network vulnerabilities
• Ultra-HD voice with Acoustic Shield noise filtering for professional-grade voice quality
• Dual USB 2.0 ports for maximum flexibility and support for USB headsets, call recording, and Bluetooth/Wi-Fi dongles
• Paperless DSS keys with up to 29 one-touch programmable keys
• EXP55 Expansion Ready for connection with up to three cascaded expansion modules for high-call volume scenarios
• Dual Gigabit Ports (PoE) for high-speed, stable data pass-through and simplified power delivery via Power over Ethernet
What's Included:
• Yealink SIP-T77U IP Phone Unit
• Handset with Handset Cord
• Desk Stand (Adjustable, two-angle)
• Ethernet Cable
• Quick Start Guide
Key Features:
• 7" adjustable multi-touch screen with high-resolution color display
• Supports up to 20 SIP accounts
• Trusted Execution Environment (TEE) hardware encryption for strongest defense against network vulnerabilities
• Ultra-HD voice with Acoustic Shield noise filtering for professional-grade voice quality
• Dual USB 2.0 ports for maximum flexibility and support for USB headsets, call recording, and Bluetooth/Wi-Fi dongles
• Paperless DSS keys with up to 29 one-touch programmable keys
• EXP55 Expansion Ready for connection with up to three cascaded expansion modules for high-call volume scenarios
• Dual Gigabit Ports (PoE) for high-speed, stable data pass-through and simplified power delivery via Power over Ethernet
What's Included:
• Yealink SIP-T77U IP Phone Unit
• Handset with Handset Cord
• Desk Stand (Adjustable, two-angle)
• Ethernet Cable
• Quick Start Guide
More product details
This phone is built for the executive desk, where call volume is high and every minute of clarity matters. The large touch screen and programmable keys make it easy to manage multiple calls, conference lines, or busy reception areas without digging through menus. It pairs naturally with a hosted PBX or on-premise SIP server and works well in Toronto office environments where Power over Ethernet is standard, keeping the desk clean with a single cable. The hardware encryption is a meaningful addition for any business handling sensitive client data, though the real-world benefit depends on your carrier supporting secure signalling. It is overkill for a single-line user or a hot-desk setup, and the price reflects that—this is a tool for someone who lives on the phone, not a spare handset for the break room.