The 123NET Uni-Comm App is a versatile mobile application for 123NET users, allowing you to manage your phone system from anywhere. Make and receive calls using your extension and caller ID, take advantage of free calls between app users and check both your extension and voicemail. Easily transfer calls to other extensions and view detailed call logs for your extension. Experience the freedom and flexibility of managing your communications on the go with free 123NET Uni-Comm App.