lp-Pabx telephony system(asterisk @ SER based open source

Abstract

Each passing day opens a new horizon. New teclmologies emerge and infuse into our daily life. One such example is the Information Technology which is bringing revolution after revolution in the life of a common person. The rapid growth of the Internet in the past few years has promoted many aspects of web development such as real-time interactive systems. Public Switched Telephone Networks (PSTN) is no longer the only means for transmitting voice data. Internet telephony is booming and is becoming one of the fastest moving trends. It allows users to make phone calls to others using the Internet Protocol, just as if they were using an ordinary telephone. An advantage of Internet Telephony is that it provides a more economical way for people to have interactive commlmication with friends or relatives overseas. Apart from making phone calls, facsimile and voice mails, Internet Phones can also provide video calls, file transmissions, whiteboard, chat rooms and E-mails.This is far better than traditional telephone systems.