Modeling and analysis of telecommunications networks ebook free download pdf
The insinuation of telecommunications into the daily fabric of our lives has been arguably the most important and surprising development of the last 25 years. Before this revolution, telephone service and its place in our lives had been largely stable for more than a generation. The growth was, so to speak, lateral, as the global reach of telecommunications extended and more people got telephone service. The distinction between oversea and domestic calls blurred with the advances in switching and transmission, undersea cable, and communication satellites. Traffic on the network remained overwhelmingly voice, largely in analog format with facsimile (Fax) beginning to make inroads. A relatively small amount of data traffic was carried by modems operating at rates up to 9600 bits per second over voice connections. Multiplexing of signals was rudimentaryŚmost connections were point-to-point business applications.