The Yealink SIP-T48U Gigabit HD IP Phone is a brand new corded telephone with 16 phone lines, ideal for business use. It includes features such as speakerphone and Power Over Ethernet (PoE) for convenient connectivity. With a sleek black design and a 1-year manufacturer warranty, this 2021 model offers reliable performance and advanced functionality like USB and Ethernet interfaces for seamless communication. The Yealink SIP-T48U is a high-quality option for those seeking a professional IP phone solution. Power adapter (optional) not included.