Test Led; Lan Link Led; Troubleshooting The Isdn Line - NETGEAR RT338 Reference Manual

Reference Guide for the Model RT338 ISDN Router

Test LED

When the router is turned on, the Test LED blinks for about a minute at a rate of about 0.5 Hz and
then turns off.
If the Test LED does not blink, or if it stops blinking and stays on, there is a fault within the router.
Cycle the power and see if it recovers.
If the error persists, you might have a hardware problem and should contact technical support.

LAN Link LED

If the LAN Link LED does not light when the Ethernet connection is made, check the following:
• Make sure that the Ethernet cable connections are secure at the router and at the hub or
workstation.
• Make sure that power is turned on to the connected hub or workstation.
• Be sure that you are using the correct cable:
— If you are connecting a Model RT338 router directly to a workstation or to the uplink
(MDI) port of a hub, use the included red crossover cable.
— If you are connecting a Model RT338 router to a normal (MDI-X) hub port, use the
included white straight-through cable.

Troubleshooting the ISDN Line

Within the first 2 minutes after power is turned on to the configured router, the ISDN D LED
should light. If the D LED does not light, check the physical connection of the ISDN line, referring
to the installation information in this guide.
If the physical connection is correct, the problem should be diagnosed using the internal Manager
interface. Refer to instructions in this guide regarding the use of the Manager interface.
The following two sections explain how to examine the ISDN initialization results and how to
perform an ISDN loopback test to verify operation with the phone company.
12-2 Troubleshooting