Lucent Technologies 5 User Manual

About the System 

Page 2-1

 

Issue 1

June 1997

0

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 

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 helps explain how the system works, this chapter begins with 
some background information about telephone communications. For a more 
detailed history and description, see 

If you are already familiar with the concepts described in this chapter, you can 
skip the chapter.