Voice over IP, or VoIP had become a buzzword in the past few years because it represents a more cost effective model for transmitting voice conversations than the old circuit switched networks. The existing telephone infrastructure consists of physical wires connecting circuit switches in which one telephone caller is connected directly to another through a switched network. This of the old switchboard operators in days of old, automated on a large scale.
The existing Internet infrastructure is far different than the circuit switched networks that carry most voice calls. The Internet carries packets of digital information data. These packets are switched and routed through the Internet from one destination to another.
The protocol that governs the Internet is View the rest of this article
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