The Yealink SIP-T48U IP phone presents a dynamic business communication solution to executives and professionals. The phone employs an appealing large 7-inch touch screen that makes the switch between pages and applications swift, easy, and convenient. With HD Voice technology, the T48U gives you superb audio quality and crystal-clear voice communications. Moreover, the T48U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset, and USB recording come true. Plus, you can use any two of them freely according to your needs. The Yealink T4U series improves upon the T4 line with improvements for greater interoperability and collaboration.