A number of research works are being carried out all over the world to improve the quality and speed of transmission. Research works are also done on the basis of the users' needs. The objective of the research work is to provide quality and affordable service to the consumers.
The world telecommunications market is expected to rise at an 11 percent compound annual growth rate at the end of year 2010. The leading telecom companies like AT&T, Vodafone, Verizon, SBC Communications, Bell South, Qwest Communications are trying to take the advantage of this growth. These companies are working on telecommunication fields like broadband technologies, EDGE(Enhanced Data rates for Global Evolution) technologies, LAN-WAN inter networking, optical networking, voice over Internet protocol, wireless data service etc.
World telecom industry is taking a crucial part of world economy. The total revenue earned from this industry is 3 percent of the gross world products and is aiming at attaining more revenues. One statistical report reveals that approximately 16.9% of the world population has access to the Internet.