Yealink SIP-T43U IP Phone
The Yealink SIP-T43U is a 12-line business IP phone from Yealink’s T4U series, built for offices needing solid multi-line capacity with modern connectivity options. It features a 3.7-inch 360×160-pixel backlit black-and-white LCD, supports up to 12 SIP accounts, and offers three pages of programmable buttons with up to 21 paperless DSS keys. Dual USB ports let the phone run Bluetooth (via BT40/BT41 dongle), Wi-Fi (via WF40/WF50 dongle), a USB headset, or USB call recording — using any two simultaneously based on the office’s needs. Yealink Optima HD voice, now with Acoustic Shield and Smart Noise Filtering, keeps calls clear even in busier office environments, and a Hall Switch handset reduces the popping sound typical of picking up or replacing older handsets.
Key Features
- Up to 12 SIP accounts, suited to busier multi-line business use
- 3.7″ 360×160 backlit LCD, with three pages of programmable buttons (up to 21 DSS keys)
- Dual USB ports, supporting Bluetooth, Wi-Fi, USB headsets, and call recording
- Optima HD voice with Acoustic Shield and Smart Noise Filtering, for clearer calls in busy offices
- Expandable with the EXP43 colour-screen module, adding up to 180 additional programmable buttons
Technical Specifications
| Specification | Detail |
|---|---|
| Model | SIP-T43U |
| Part Number | 1301202 |
| SIP Accounts | Up to 12 |
| Display | 3.7″ 360 x 160-pixel graphical LCD, backlit, black-and-white |
| Audio | Optima HD voice with Acoustic Shield and Smart Noise Filtering |
| Codec Support | Opus, plus standard wideband/narrowband codecs |
| Programmable Keys | Up to 21 paperless DSS keys across 3 pages |
| USB | Dual USB ports (Bluetooth, Wi-Fi dongle, USB headset, or call recording — any two at once) |
| Wireless Options | Wi-Fi via WF40/WF50 dongle; Bluetooth via BT40/BT41 dongle |
| Power | PoE support; PSU (PS5V1200US) sold separately |
| Headset Support | USB headset and EHS support (does not support the older EHS36 or EXP40) |
| Expansion | EXP43 colour-screen module, up to 3 modules for 180 additional buttons |
| Mounting | Stand with 2 adjustable angles; wall mountable |
| Provisioning | Zero Touch Provisioning via Yealink RPS; unified firmware across T42U/T43U/T46U/T48U |
Best Suited For
- Busy offices needing 12-line capacity, such as departments or shared reception setups
- Businesses wanting flexible USB connectivity, choosing between Bluetooth, Wi-Fi, headset, or call recording as needed
- Offices standardising on the Yealink T4U ecosystem, benefiting from unified firmware and provisioning across T42U/T43U/T46U/T48U models
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