Yealink SIP-T43U SIP Phone
Yealink SIP‑T43U is a versatile, 12‑line Gigabit IP phone featuring a spacious 3.7″ (360×160 px) graphical LCD, dual USB ports for Wi‑Fi/Bluetooth/headset connectivity, and compatibility with expansion modules (up to EXP43). It delivers superior HD audio using Opus/G.722 codecs alongside Yealink’s Acoustic Shield and full‑duplex AEC, coupled with dual Gigabit Ethernet with PoE and robust enterprise features like 8 programmable line/DSS keys, 3-way conferencing, BLF/BLA, call park/pickup, LDAP phonebooks, and USB call recording.
The SIP‑T43U is designed for large-scale deployment with Zero‑Touch Provisioning (RPS), dual firmware images for upgrade resilience, plus strong security (TLS 1.3, SRTP, OpenVPN, 802.1X, VLAN, IPv6), making it ideal for busy office or co-working environments—though some users have reported occasional audio delay and minor handset buzz in early firmware versions.
Description
Yealink SIP-T43U SIP Phone
Specifications
Audio & Call Features
- HD Audio: Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology for maximum acoustic performance.
- Wideband Codecs: Opus, G.722
- Narrowband Codecs: G.711 (A/μ), G.729A/B, G.726, G.723.1, iLBC
- Speakerphone: Full-duplex with Acoustic Echo Cancellation (AEC)
- Advanced Audio Features: Voice Activity Detection (VAD), Comfort Noise Generation (CNG), Packet Loss Concealment (PLC), Adaptive Jitter Buffer (AJB), Automatic Gain Control (AGC)
Display & Interface
- Display: 3.7″ 360×160-pixel graphical LCD with backlight
- Line Keys: 8 with LED indicators
- Memory Keys: 21 programmable keys (3 pages of 7 keys)
- Soft Keys: 4 context-sensitive keys
- Navigation Keys: 6 keys
- Volume Control: 2 keys
- Mute, Headset, Hands-free Speakerphone Keys: Illuminated
Connectivity & Power
- Ethernet Ports: Dual-port Gigabit Ethernet
- USB Ports: 2 x USB 2.0 compliant
- Headset Port: 1 x RJ9 (4P4C)
- Handset Port: 1 x RJ9 (4P4C)
- Power over Ethernet (PoE): IEEE 802.3af, Class 2
- Power Consumption:
- PSU: 0.9–2.2W
- PoE: 1.5–3.2W
- Operating Temperature: 10°C to 50°C (50°F to 122°F)
- Operating Humidity: 10% to 95%
Wireless & Headset Support
- Bluetooth: Via BT40/BT41/BT52
- Wi-Fi: Via WF40/WF50
- USB Headset: Supported
- Expansion Module: Supports Yealink EXP43 color-screen expansion module
Management & Security
- Provisioning: Supports FTP/TFTP/HTTP/HTTPS for mass deployment
- Management Platforms: Yealink Device Management Platform (YDMP) and Yealink Management Cloud Service (YMCS)
- Security Protocols: TLS, SRTP, HTTPS, AES encryption, OpenVPN, IEEE 802.1X, IPv6, LLDP/CDP/DHCP VLAN, ICE
- Configuration: Browser, phone, or auto-provisioning
Physical Specifications
- Dimensions: 224.9mm (W) x 206.2mm (D) x 174.9mm (H) x 52mm (T)
- Weight: Approximately 1.25 kg
- Wall Mountable: Yes, with included stand
- Color: Classic Grey
Summary
Yealink SIP-T43U is a feature-rich, 12-line IP phone designed for modern business environments. It offers HD audio quality, a 3.7″ graphical LCD display, and supports dual USB ports for flexible expansion options. With PoE support, dual-port Gigabit Ethernet, and compatibility with Yealink’s expansion modules, it provides a versatile and scalable communication solution
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