VoIP works by converting voice into digital data and sending it through your Internet connection.VoIP allows for normal phone calls through the internet with all of the options usually enjoyed by a traditional PBX, including voicemail, call waiting, call forwarding, conference calling, caller ID, call queues, advanced reporting, and more. In addition, VoIP software integrates with desktop computers and cellular phones for use as “softphones”. The only requirement is that they have voice and audio input/output capabilities.