The T43U supports 12 lines and has a black and white 3.7 inch display. Featuring HD Voice and Opus. the T43U has been designed with great audio in mind so that every call is heard loud and clear on both ends. The dual USB ports on the T43U allow users to connect to Bluetooth, Wi-Fi and/or USB headset and also allows for the ability to do USB recording.
Users have the ability to pair a Yealink EXP43 expansion module to add up to 20 physical keys on each page with dual-color LEDs. The Yealink T4U Series have the same elegant design as the previous T4 line, but comes with the benefits of improvements for greater interoperability and better collaboration.