User guide

Table Of Contents
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 Meaning when lit
Power Lit when the router is on.
System Lit for a short time while the router performs its start-up
sequence and self tests. Off during normal operation.
LAN Link 1-4 Lit when the corresponding LAN port has an Ethernet
connection to a PC or hub.
LAN Activity 1-4 Lit when data is being sent or received over the corresponding
LAN (Ethernet) connection.
LAN Collision Lit when there is a collision on the Ethernet connection.
ISDN Active 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.
ISDN Data 1 Lit when data is sent or received over the ISDN B1 channel.
ISDN Data 2 Lit when data is sent or received over the ISDN B2 channel.
Call Alert Flashes when configured limits on the Internet connection are
exceeded.
Voice 1 (AR140 only) Lit when the telephone connected to the Phone 1 port is off the
hook.
Voice 2 (AR140 only) Lit when the telephone connected to the Phone 2 port is off the
hook.