Essay on Voice Over IP

Executive summary
IP telephony is a rapidly emerging technology for voice communication that has astonished both the data communication and telecom industries. Technical developments over last few years have made the use of IP networks for telephonic application a reality. The objective of this paper is to provide the introduction to the technology, and describe the related issues necessary for the effective delivering and quality of the service.

The paper reviews the IP telephony technology, covering its background, working, and various methods of its implementation. This paper also explores the pros and cons of this exciting technology and looks at what the future has to offer. It also examines the market trends and looks at what market researchers think about IP telephony. At the end it covers the telecommunication industry issues with respect to VOIP.

Introduction of the Technology
Little more than a decade ago internet was not available to general public , interactive voice communications were only made by telephone at Public Switched Telephone network(PSTN) and the data exchange was expensive for long distances. Then we saw appearing some interesting things: Personal computers to large masses and internet to general public. People begun to use PCs and internet to communicate and to exchange data with new services like Email, chat and discussion group.

Availability of a telephone and access to high quality public switched telephone network is considered to be essential in modern society. There is however, a paradigm shift beginning to occur since more and more communications is in digital form and transported via packet networks such as IP, ATM and frame relay. Since data traffic is growing much faster than telephone traffic, there has been considerable interest in transporting voice over data networks. (Jeff Tyson)

Support for voice communications using the internet protocol (IP), usually called “IP telephony”, has become especially attractive..............

ESSAYS ON TECHNOLOGY