Multifunctional SIP Phone, Excellent Voice Communication The T73U IP phone is an all-in-one business phone that enables excellent voice communications and extended functions. Equipped with Hall switch technology, the T73U provides you with a quieter office environment. The redesigned appearance of Yealink's new T73U makes the phone more fashionable, thinner, and more in line with modern aesthetic standards. The T73U supports 12 SIP account registrations and is equipped with a 2.8-inch color display, backlight, and an EXP55 expansion station. Combined with Yealink 's ultra-high-definition voice technology, the T73U provides excellent audio quality and clear voice communications. When making calls, the phone responds faster and more responsively. In addition, a built-in USB port realizes the functions of a USB headset and USB recording, and you can choose freely according to your needs. The T73U adopts Linux 6.1 and a TEE hardware encryption solution, providing you with a more secure storage experience. At the same time, it improves the phone's performance, bringing you more flexible interoperability and a better collaboration experience. The T7X series better builds the Yealink ecosystem and is compatible with more Yealink headsets. The phone supports configuring and upgrading headsets through LCD and supports Yealink headsets with a wearing detection function for intelligent channel switching. Key Features and Benefits 2.8" 320x240 pixel display with backlight Linux 6.1 version TEE hardware encryption solution Dual system function T7X Auto-P template unified Unified firmware for T7X series (T73U, T73W, T74U, T74W, T77W), T85W, and T87W Up to 12 SIP accounts PoE support Support WF50/BT41 Headset, EHS support Supports color-screen expansion modules Stand with 2 adjustable angles Wall mountable Handset with hall switch HD Audio Ultra-High-Definition Sound Quality The sound quality of Yealink T7X series phones is higher definition and perfect, making communication easier. Yealink combines cutting-edge hardware and software with broadband technology to achieve the best acoustic performance. Its hearing aid compatible (HAC) handset helps people with hearing loss hear sounds more clearly.