Справочник Пользователя для 3com SuperStack II

A

PPENDIX

 A: T

ROUBLESHOOTING

This section describes how the WAN LEDs indicate errors on systems 
using ISDN or CSU/DSU connections.

Meaning:

Indicates a loss of signal, possibly due to a disconnected 
cable. 

Action:

Check all cable connections.

Meaning:

An error in received frames has been detected on either 
channel B1 or channel B2.

Amber

Amber