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Digital Networks

  • John C. McDonald
Part of the Applications of Communications Theory book series (ACTH)

Abstract

A digital switching system rarely stands alone and performs its functions for a closed community. Most frequently, the system operates as a node in a network containing many switching systems that employ both analog and digital technology. Such networks are formed by design procedures that trade-off transmission and switching cost to minimize overall network cost. When communications services are to be provided over a large geographic area, these procedures yield minimum cost solutions that involve a multiplicity of switching systems. Previous chapters have described the elements and operation of digital switching systems in their own context. This chapter describes networks of interconnected digital and analog switching systems. The final chapter of this volume discusses a long-range goal of most public telecommunication networks, the purely digital integrated services digital network (ISDN).

Keywords

Asynchronous Transfer Mode Switching System Packet Switching Digital Network Voice Service 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • John C. McDonald
    • 1
  1. 1.Contel CorporationNew YorkUSA

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