Yealink presents a dynamic business communication solution for executives and professionals alike with the SIP-T48U IP phone. The phone boasts an appealing large touchscreen that makes the switch between pages and applications swift, easy, and convenient. United Yealink Optima HD Voice technology and the wideband Opus codec combine to let the T48U award you with superb audio quality and crystal clear voice communication. The T48U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset and USB recording possible. You can use any two of these features according to your needs. The updated Yealink T4U series offers the same elegant appearance as the T4 line, but with improvements for greater interoperability and better collaboration.