Voice Call, a boom to the present generation is a gift of the valuable technology and is of keen interest for a wide range of users. Global world is flooded with mobile phone users and we are on the track of providing the best communication pathway. Most WiFi and WiMAX access points use fixed backhaul technologies that is developing at a greater pace. Our WiFi and GSM domains allows the best quality and is the most cost efficient information transfer at any instant of time, irrespective of the transmission medium used for the media as compared to other operators. Cellular operators in particular can offer a handsome service that consists of a broadband connection with a WiFi router and a set of dual mode devices. This supports the Fixed Mobile Substitution (FMS) where calls from the workplace can be transmitted as VoIP over WiFi or a broadband connection, while VCC technology allows these calls to pass over to cellular networks as the device shifts to locus of weak WiFi coverage.