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2
Configuring the WAN Physical
Link
This chapter covers the following topics:
• Configuring WAN Physical Links on page 2-2
• Monitoring WAN Physical Links on page 2-8
Overview
In this document, WAN refers to either T1, E1, or T3 technologies. T1 is a mature
technology originally developed for voice telephone transmission. It was used to
aggregate a number of voice lines into a single connection to the telephone network.
Today, T1 is also used to transmit digital data using widely available equipment and
established wiring commonly available in diverse locations.
A similar technology standard is in use in Europe, namely E1. T1 and E1 are similar, but
not identical.
Higher bandwidth characterizes T3 connections. Essentially, a T3 connection is
equivalent to a bundle of 28 T1 connections.
This chapter describes the T1, E1, and T3 features that can be configured in the WAN
module software.
WAN Module Installation and User Guide
2-1
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