The SIP-T42S IP phone is a versatile business communication tool that excels in voice communication and offers extended functionality. It outperforms its predecessor, the T42G, with a faster and more responsive interface. Supporting up to 12 lines and featuring multiple programmable keys, it enhances productivity for users. Equipped with Yealink Optima HD Voice Technology and the wideband codec of Opus, it ensures exceptional sound quality and clear communication. Additionally, the inclusion of Gigabit Ethernet technology enables swift call handling. With the addition of a USB port, the SIP-T42S provides unparalleled functionality, supporting Bluetooth, Wi-Fi, and USB recording features. As part of the new T4S series, it maintains the elegant design of the T4 line while introducing enhancements for improved interoperability and collaboration.