Last two decades has witnessed the digitization of information which just became possible due to the creation of IP based networks. Internet has further supported this process and by the year 2007 about 839 millions users got connected to global network through Internet. Our planet has also succeeded to become a Globe Town. Within seconds any event that occurs in any part of the world reaches 67% of world’s population in the shape of news out of which the distribution platform becomes IP networks.
Thus, IP services have brought a revolution in our world. Homes, offices, organizations, enterprises, defense, security agencies, banks and industries promoted themselves to automization and have adopted this cheaper & widely used connectivity.