Yealink T4 U Range Side by Side Specs
Yealink have recently update the T4 range moving from the 'S' models to the 'U' models.
This next generation T4U series now comes with dual USB ports making it possible to have both a WIFI Dongle and Bluetooth Headset (or USB Wired Headset) plugged into your phone at the same time. A bump in processing power ensures that all user interactions are ultra quick.