Building voice over internet protocol system with asterisk

Abstract

Voice over Internet Protocol (VoIP) is a revolutionary technology, which has become a key topic in both the growing Internet industry and established telecommunications industry. In VoIP technology telephone calls are to be made over computer networks like the Internet where packet switching technique is used instead of circuit switching and analog signals are converted into the digital signals in the real time two-way transmission of conversation. VoIP has become a potential alternative to the existing PSTN technology due to its reduced costs.

Our thesis work mainly focuses on two issues: understanding the fundamentals of VoIP and Astersk and building a VoIP system with Asterisk. In the first issue, we have analyzed knowledges of VoIP and Asterisk, the relationship between them, and effect of Asterisk on VoIP. In the second issue, we have installed and configured a VoIP system to provide telephony service using PBX software (Asterisk). We learned a lot about these items while working on this thesis. We also found out that building a VoIP system with Astersisk is more complex than we first suspected. However, making this thesis help us consolidate and improve a lot of knowledge that will be useful in future.