The SIP-T42U IP phone is a feature-rich business tool for excellent communications and extended functionality. Coming
with plentiful built-in programmable keys, this 12-line IP phone guarantees the enhanced productivity. United Yealink
Optima HD Voice technology and wideband codec of Opus, the T42U awards you the superb audio quality and
crystal-clear voice communications. The phone feels quicker and more responsive when performing call features.
Moreover, the T42U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset and USB recording come
true, and you can use any two of them freely according to your needs. The Yealink new T4U series offers the same elegant
appearance as the T4 line, but with improvements for greater interoperability and better collaboration.