Voice - Video Communication on Mobile Phones and PCs´ Using Asterisk EPBX

This paper presents the design and implementation of Asterisk server, which serves as the local exchange for placing voice and video calls within a private Wi-Fi cloud and legacy networks, that is, with the Public Switch Telephony Network (PSTN). The model is accessible within the area of a university campus and allows only those mobile phones and PCs´ to connect to the Asterisk server which are registered with the wireless network. The work proposed in this paper has an added feature for placing the voice and video calls on mobile phones hence increasing the mobility of a user. The model is successful in carrying out voice and video calls on Android supported hand helds connected with the wireless network and PCs connected with both wired LAN and wireless LAN. Further, every user is provided with his own extension number that can be used to connect to the outside world.