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Chapter 6

Troubleshooting

This chapter provides information on the more common hardware problems you may encounter in using your GT 70 Series router. It contains a single topic:

Hardware Problems and Solutions

Hardware Problems and Solutions

Table 6-1 lists the more common hardware problems that you may encounter with your GT 70 Series router or with routers in general. It identifies the problem, possible cause(s) of the problem, and the steps to take to solve the problem.

Table 6-1 Hardware Problems and Solutions
Problem	Possible Cause(s)	Solution
No PWR light, console, or other activity.	Router is not plugged into a power source. Circuit power interrupted.	Plug your router into a grounded power outlet. Check outlet and circuit fuses or breakers.
No OK light.	Router is not booting.	Contact OpenROUTE Networks customer service if you get the message `Power On Self Test detected a hardware failure. Error log longword = xxxxxxxx` where xxxxxxxx is eight hex digits. Report this value to OpenROUTE Networks customer service.
No LAN light.	Ethernet is not up.	Check all Ethernet- specific connections.
No WAN light.	See problems with D and B channels in this table.
No D channel light.	Line activation is not achieved due to the following: Incorrect S/T switch setting. European switch type. Loose connection. Bad cable. Wrong cable	Set switch correctly. See Setting the S/T Switch in Chapter 3. The European switch type (NET3, VN4) only activates the line during a call. The line is de-activated when the interface has no active calls and no light is on. Secure all connections. Try another OpenROUTE Networks-supplied RJ-45 ISDN cable. Check the Part Number (P/N) on the cable and use the appropriate cable. See Before You Begin in Chapter 3. If all else is okay, check with your telephone company.
No B channel light.	The call is not successfully established.	Be sure you are dialing the correct telephone number. Check that your ISDN line is in service. (D channel light must be on.) Check to see if the remote site is busy. Check the LAN/WAN Interface Guide for other possible configuration problems and try again later.
Cannot access a remote network or the Internet even though the router looks okay.	ISP service is down.	Try again later. Contact your ISP for status.

Additional Troubleshooting

For information on software problems, causes, and solutions, see the Event Logging System Messages Guide on the OpenROUTE Networks Web site: www.openroute.com.

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