Instruction manual

About the System
2
Contents
Background 2–2
■ Telephone Equipment 2–5
■ Switching Equipment 2–6
The Evolution of Switches 2–6
Switching Methods 2–9
System Overview 2–10
Incoming Trunks 2–12
Modes of Operation 2–16
Components 2–18
■ Line/Trunk and Extension Modules 2–21
Features 2–22
Applications 2–22
Programming the System 2–25
System Capacities 2–25
Auxiliary Components 2–26
Data Communications Capabilities 2–29
About the System
2–i