This chapter surveys the landscape vis-à-vis public switched telephone networks (PSTNs), data networks, hybrid fiber-coaxial networks of cable operators and wireless networks. This survey identifies the origins of many important building blocks developed especially in connection with PSTN. The chapter describes how these building blocks proved to be important for all other types of networks as well including data networks. Similarly, an important concept that was proposed by National Science Foundation during the development of data networks namely, the new architecture for Internet based on national, regional, and local Internet service providers led to organizing the data networks into local area network, metropolitan area ...

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