3CX is a fully featured communication and telephone IP system software supporting unlimited users and free to use for one year!Switching from a traditional PBX to an IP PBX will deliver significant call cost savings. Combining a low-cost 3CX solution with inexpensive Raspberry Pi hardware will provide even more significant long term savings - without skimping on advanced and flexible features. When compared to other traditional PBX vendors and hosted systems in the market today - the 3CX Raspberry Pi Kit is a no-brainer.This 3CX kit contains a pre-assembled Raspberry Pi 4B 8GB inside a premium self-cooling aluminum case with soft-touch lid, 3.5A power supply, and pre-programmed 32 GB (updated from 16GB) Class 10 SanDisk microSD card that is pre-installed with the Raspberry Pi OS. Key Features: