In order to build a framework in which to discuss the evolution of data communications, the three main components of a basic data transmission system (source, medium and data sink) are considered to see what has happened in each area since 1960. This somewhat oversimplified basic approach is taken in order to avoid the confusing terminology and…

This report outlines the development of the UDECOM system (UNIVAC-DIGITAL EQUIPMENT CORPORATION DATA COMMUNICATION SYSTEM). UDECOM is the implementation of a software package for the DEC PDP-8/I computer which enables data communication with the UNIVAC 1108 computer. Also described are the results of research into the U1108/U1004 data…

A constantly expanding, vast network of telecommunication links spans the industrialized countries of the world, carrying telephone, telegraph, and television signals, news photographs, and radio programs. The field of data transmission through these links is covered in this book, which first offers a brief rationale and discussion of various…

Measures, tools, and techniques applicable to the performance measurement of computer communication networks are described for technicians who procure computer services from a remote access network. Cost considerations are discussed as a major component of evaluation, and measurement and evaluation methodologies are surveyed. External measurement…