VoIP or Voice over IP technology is becoming more and more popular by the time. It uses an Internet connection to transmit voice data from one user to other. The key for the success of VoIP technology is that they offer cheap mobile services as compared to traditional phone. Traditionally, this technology is limited to those users who have any VoIP device or personal computer and connected to Internet. Therefore, this limitation restricted the Voice over IP penetration to users who are constrained to office or home environment.