The SIP-T42S IP phone is a dynamic business communications tool for superior voice communications and advanced functionality. It has a faster, more responsive interface than the T42G and offers better overall performance. The SIP-T42S is a 12-line IP phone with multiple programmable keys to increase productivity. It is equipped with Yealink Optima HD voice technology and Opus' wideband codec, which provide excellent sound quality and crystal clear communications. In addition, the SIP-T42S is equipped with Gigabit Ethernet technology for fast call handling. In addition, the SIP-T42S has a brand new USB port and offers unprecedented functionality and expandability, ready for future Bluetooth, Wi-Fi and USB recording capabilities. The new T4S series offers the same elegant appearance as the T4 line, but with improvements for greater interoperability and collaboration.
* Opus: Supports 8 kHz (narrow band) and 16 kHz (wide band) sampling rate