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Description
Yealink SIP-T43U Unified Firmware Enhanced IP Phone
The Yealink SIP-T43U is a professional 12-line SIP IP phone designed for businesses that demand exceptional voice quality, reliability, and expandability. As part of Yealink's T4U Series, it features Unified Firmware, making deployment, provisioning, and management easier across multiple Yealink devices while delivering a consistent user experience. It supports up to 12 SIP accounts, making it ideal for offices, receptionists, managers, and high-volume call users.
Equipped with a 3.7-inch backlit LCD display, HD Voice, dual Gigabit Ethernet ports, Power over Ethernet (PoE), and dual USB ports, the SIP-T43U offers enterprise-class performance. Optional USB accessories provide support for Bluetooth, Wi-Fi, USB headsets, USB call recording, and expansion modules, allowing the phone to grow with your business.
This refurbished Yealink IP phone has been professionally tested, cleaned, and verified to ensure dependable, business-ready performance.
Key Features
• Supports up to 12 SIP accounts
• 3.7-inch backlit graphical LCD display
• Yealink Optima HD Voice technology
• Acoustic Shield & Smart Noise Filtering
• Dual Gigabit Ethernet ports
• Power over Ethernet (PoE) support
• Dual USB ports for expansion
• USB headset support
• Optional Bluetooth and Wi-Fi via USB adapters
• Compatible with Yealink EXP43 Expansion Module
• EHS support for wireless headsets
• Adjustable stand and wall-mount capability
Compatibility
The Yealink SIP-T43U is compatible with:
• SIP-based VoIP phone systems
• 3CX
• Asterisk
• FreePBX
• BroadWorks / BroadSoft
• RingCentral
• Vonage Business
• Most SIP-compliant hosted VoIP providers
Refurbishment & Quality Assurance Process
Each refurbished unit undergoes a comprehensive multi-point inspection and reconditioning process to ensure reliable, business-ready performance:
✔ Full functional testing (display, keypad, speakerphone, handset, and network ports)
✔ Firmware reset and verification
✔ HD audio and network connectivity testing
✔ Replacement of worn or non-performing components as needed
✔ Professional cleaning and sanitation
✔ Inspection of handset, cords, and connectors
Condition
Condition: Refurbished
Color: Classic Gray
Minor cosmetic wear may be present. Fully tested and verified to be functional.
What’s Included
• Yealink SIP-T43U IP Phone
• Handset
• Handset Cord
• Ethernet Cable (Line Cord)
• Desk Stand
Power supply sold separately unless specified. PoE supported.
Product Specifications
| Feature | Details |
|---|---|
| Model | SIP-T43U |
| Phone Type | SIP IP Phone |
| SIP Accounts | Up to 12 |
| Display | 3.7" Backlit Graphical LCD |
| Ethernet | Dual Gigabit Ports |
| USB Ports | 2 |
| Audio | Yealink Optima HD Voice |
| Power | PoE (802.3af) or Optional Power Adapter |
| Expansion | EXP43 Module Support |
| Color | Classic Gray |
Payment & Security
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