The free 3CX Phone System 20.0 download is provided on our software library. Most users point out that it has such a benefit as it is easy to use. The software refers to System Utilities, according to its main functionality. Please note that 3CX Phone System is developed by 3CX. The built-in antivirus system shows that the downloadable file is safe. The most popular version of this software that our community members install is 14.0.