Voice over IP (VoIP) is an umbrella term for a set of technologies that allow voice traffic to be
carried over Internet Protocol (IP) networks. VoIP transfers the voice streams of audio calls into
data packets as opposed to traditional, analog circuit-switched voice communications used by
the public switched telephone network (PSTN).

VoIP is the major driving force behind the convergence of networking and telecommunications
by combining voice telephony and data into a single integrated IP network system. VoIP is all
about saving cost for companies through eliminating costly redundant infrastructures and
telecommunication usage charges while also delivering enhanced management features and
calling services features.