The SIP-T48S IP phone is a dynamic business communications solution for executives and professionals. This phone offers a large touch screen that makes switching between pages and applications quick, easy and convenient. The SIP-T48S also features Yealink's Optima HD Voice technology and Opus' wideband codec for unmatched audio clarity. Phone users will think they are sitting in the same room with each other. The phone uses Gigabit Ethernet technology for fast call handling. Plus it works