Operation

3

Overview

This chapter contains information for operating your DSU/CSU. It includes a description of the front panel LEDs and sample procedures to help you become familiar with the use of the asynchronous terminal for DSU/CSU control.

Front Panel LEDs

There are twelve LEDs on the DSU/CSU front panel. The five LEDs on the right (Figure 3-1) are shared between the DTE Drop/Insert (DSX-1) interface and the data ports. Use the Control branch of the asynchronous terminal menu tree to choose which port’s status the LEDs display (see Menu Organization on page 3-7).

Figure 3-1. DSU/CSU LEDs

A green LED indicates normal operation. A yellow LED indicates a warning (for the DTE Drop/Insert interface) or activity (for the data ports). Conditions are sampled every tenth of a second.

The twelve front panel LEDs are grouped into four sections to indicate the status of the:

HSystem (Table 3-1)

HNetwork Interface (Table 3-2)

HDTE Drop/Insert (DSX-1) Interface (Table 3-3)

HData Ports (Table 3-4)

3162-A2-GB20-40

August 2000

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