Yealink T46U IP Phone (SIP-T46U)
The Yealink SIP-T46U is a 16-line Gigabit IP phone built for knowledge workers and managers with heavy daily call volume. It features a 4.3-inch 480×272-pixel colour LCD with backlight, supports up to 16 SIP accounts, and offers 27 programmable keys across three pages (9 keys per page) for speed dial, line appearances, and call features. Yealink Optima HD voice, enhanced with Acoustic Shield and Smart Noise Filtering, keeps calls clear even in busier office environments. Dual USB ports support Bluetooth (via BT40/BT41), Wi-Fi (via WF40/WF50), USB headsets, USB call recording, and the EXP43 colour-screen expansion module. As the direct successor to the T46S, the T46U adds a faster processor and improved noise handling, and current firmware brings TLS 1.3 for stronger call security.
Key Features
- Up to 16 SIP accounts, suited to heavy multi-line business use
- 4.3″ 480×272 colour LCD, with 27 programmable keys across three pages
- Optima HD voice with Acoustic Shield and Smart Noise Filtering, for clearer calls in busy offices
- Dual USB ports, supporting Bluetooth, Wi-Fi, USB headsets, and call recording
- Dual-port Gigabit Ethernet with PoE, plus expandability via the EXP43 module
Technical Specifications
| Specification | Detail |
|---|---|
| Model | SIP-T46U |
| Part Number | 1301203 |
| SIP Accounts | Up to 16 |
| Display | 4.3″ 480 x 272-pixel colour LCD, backlit |
| Audio | Optima HD voice with Acoustic Shield and Smart Noise Filtering |
| Codec Support | AMR-WB (optional), AMR-NB (optional), Opus, G.722, G.711 (A/µ), G.723.1, G.729AB, G.726, iLBC |
| Programmable Keys | 27 (9 keys, 3 pages) |
| Network | Dual-port Gigabit Ethernet |
| USB | Dual USB 2.0 ports (Bluetooth via BT40/BT41, Wi-Fi via WF40/WF50, USB headset, call recording) |
| Power | PoE support; optional power adapter if PoE unavailable |
| Headset Support | USB headset, EHS support (EHS36/EHS40); Yealink Wireless DECT headsets connect directly via USB |
| Expansion | EXP43 colour-screen expansion module |
| Security | TLS/SSL, TLS 1.3 (with V87 firmware upgrade), dual firmware images |
| Provisioning | Static/DHCP IP, FTP/FTPS/TFTP/HTTP/HTTPS central provisioning |
| Compatibility | 3CX, Asterisk, BroadSoft BroadWorks, Genesys, and major hosted cloud platforms |
Best Suited For
- Knowledge workers and managers with heavy call volume, needing 16-line capacity and fast call handling
- Offices wanting flexible wireless connectivity, choosing between Bluetooth, Wi-Fi, or wired USB options as needed
- Businesses replacing older T46S or T29G deployments, benefiting from a faster processor and improved noise filtering
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