AT&T 7400 series Manuel D’Utilisation

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1.  INTRODUCTION TO CONNECTIVITY
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This book explains two aspects of communicating through a business communications system:
Part I, Communications System Networking, explains how to arrange two or more communications
systems in a network so that they communicate with each other efficiently and cost effectively.
This chapter explains some fundamentals that are common to both networking and data connectivity.
These fundamentals are:
1-1