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 Telecommunication is the exchange of over electrical cable, or via electromagnetic radiation through space such as radio or light. Signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags and optical heliographs. Technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, television and teleprompter, networks, radio, microwave transmission, optical fibre, and communications satellites. It is transmitted through a transmission medium, such as over physical media, a revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications. Telecommunication Systems’ high quality articles examine the use of analytic and quantitative tools for the modelling, analysis, design, and management of telecommunication systems this configuration of a centralized computer (mainframe) with remote dumb terminals remained popular a technology that sends a message in portions to its destination asynchronously without passing it through a centralized mainframe.