Date Added: Apr 2012
The purpose of this paper is to design and implement a telephony program that uses Wi-Fi using Peer-to-Peer communication between mobile phones without any cost. The system will allow users to search for other individuals within the Wi-Fi range and to establish free P2P voice connections, or to establish virtual connection through Access Points (AP) in case of unavailability of the mobile device in the same Wi-Fi. In addition, the authors are using a novel algorithm to tackle the previous fundamental problem of designing Ad hoc and P2P telephony using Wi-Fi which will be independent of the service provider database. This algorithm always gives unique IP address for corresponding mobile number and vice versa.