Table of Contents
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Chapter 10
Troubleshooting
Refer to this chapter for problem solving help.
Front panel LEDs
The LEDs on the front panel of the router show information about its state.
Table 10-1: Front panel LEDs
LED
Power
System
LAN Link 1-4
LAN Activity 1-4
LAN Collision
ISDN Active
ISDN Data 1
ISDN Data 2
Call Alert
Voice 1 (AR140 only)
Voice 2 (AR140 only)
Meaning when lit
Lit when the router is on.
Lit for a short time while the router performs its start-up
sequence and self tests. Off during normal operation.
Lit when the corresponding LAN port has an Ethernet
connection to a PC or hub.
Lit when data is being sent or received over the corresponding
LAN (Ethernet) connection.
Lit when there is a collision on the Ethernet connection.
Lit when the ISDN U or S/T port on the router is connected to an
ISDN service, and is available for phone or data calls.
Lit when data is sent or received over the ISDN B1 channel.
Lit when data is sent or received over the ISDN B2 channel.
Flashes when configured limits on the Internet connection are
exceeded.
Lit when the telephone connected to the Phone 1 port is off the
hook.
Lit when the telephone connected to the Phone 2 port is off the
hook.
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Table of Contents
Troubleshooting
