About The System - AT&T MERLIN LEGEND Release 3.1 System Manager's Manual

About the System

This chapter provides a general overview that introduces all of the major
aspects of the system and its operation, including:
Trunks
Modes of operation
System components
Features
Applications
Programming the system
System capacities
Auxiliary components
Data communications capabilities
More information about specific system topics is included throughout the guide.
The Equipment and Operations Reference , the Feature Reference , and System
Programming provide detailed information.
Many of the principles of telephone communications have not changed since
Alexander Graham Bell made the first phone call in 1876. Because learning
about these concepts will help you to understand how the system works, this
chapter begins with some background on telephone communications. For a
more detailed history and description, see Appendix B, "About
Telecommunications."
If you are already familiar with the concepts described in this chapter, you can
skip the chapter.
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About the System