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Introduction
1
This chapter introduces the following features of the Passport 4430/4450/4455
devices, hereafter referred to as a Passport 4400 unit:
• Ethernet Base Module on page 1-3
• Data Modules on page 1-3
• T1/E1 and Digital Voice Modules on page 1-4
• Analog Voice Modules on page 1-4
• Interface Modules (WAN) page 1-5
Figure 1-1. Passport 4400 Models
Model 4430
Models 4450
Model 4450 and 4455 with
Redundand Power Supply
and 4455