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Chapter 1 • Introduction
1031484-0001 Revision 2
1
Chapter 1
Introduction
This chapter addresses the following topics:
• DW4020 purpose and components on page 1
• Characteristics and identification of equipment on page 2
DW4020 purpose and
components
The DW4020 is designed to provide multiple computer
connections through a single DIRECWAY
®
terminal. It is
composed of three stackable components as shown in Figure 1:
• Receive modem (also sometimes referred to as the Indoor
Receive Unit (IRU))
• Transmit modem (also sometimes referred to as the Indoor
Transmit Unit (ITU))
• Gateway (GWH)
Note: Revision 1 of this manual referred to the DW4020 as the
"Gateway," and the Gateway as the "Gateway host." This
terminology has changed. Please use the terminology in this
manual.
Figure 1: The DW4020
Receive modem
Transmit modem
Gateway