Voice over Internet Protocol (VoIP) is a term which is used to describe a phone call that is made over the internet. The phone calls which are made over the internet network generally end at a point that is not on the internet. Majority of the recipients of phone calls receive the phone calls with a traditional telephone or with a mobile phone. The route might start off the internet but will end at a point which was reached by routing the phone call from Public switched telephone network (PSTN) that is the common description for terminating the call. Hence, VoIP business is a business based on profit from international voice traffic. Difference between local and international call cost will be business profit. VoIP Business is based on the conversion of international phone calls into local calls. A VoIP phone system accepts international phone calls from transit operator and converts them into local ones.