Troubleshooting. ZyXEL Communications 623ME-T, Prestige 623ME-T
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Prestige 623ME-T User’s Guide
Appendix A
Troubleshooting
This chapter covers potential problems and the corresponding remedies.
A.1 Using LEDs to Diagnose Problems
The LEDs are useful aides for finding possible problem causes.
A.1.1 Power LED
The PWR LED on the front panel does not light up.
Chart A-1 Troubleshooting Power LED
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Make sure that the Prestige’s power adaptor is connected to the Prestige and plugged in to an appropriate power source. Use only the supplied power adaptor.
Check that the Prestige and the power source are both turned on and the Prestige is receiving sufficient power.
Turn the Prestige off and on.
If the error persists, you may have a hardware problem. In this case, you should contact your vendor.
A.1.2 LAN LED
The LAN LED on the front panel does not light up.
Chart A-2 Troubleshooting LAN LED
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Check the Ethernet cable connections between your Prestige and the computer or hub.
Check for faulty Ethernet cables.
Make sure your computer’s Ethernet card is working properly.
If these steps fail to correct the problem, contact your local distributor for assistance.
Troubleshooting A-1
Prestige 623ME-T User’s Guide
A.1.3 DSL LED
The DSL LED on the front panel does not light up.
Chart A-3 Troubleshooting DSL LED
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Check the telephone wire and connections between the Prestige DSL port and the wall jack.
Make sure that the telephone company has checked your phone line and set it up for DSL service.
Reset your ADSL line to reinitialize your link to the DSLAM. For details, refer to the Maintenance chapter (web configurator) or the System Information and Diagnosis chapter (SMT).
If these steps fail to correct the problem, contact your local distributor for assistance.
A.2 Telnet
I cannot telnet into the Prestige.
Chart A-4 Troubleshooting Telnet
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Check the LAN port and the other Ethernet connections.
Make sure you are using the correct IP address of the Prestige. Check the IP address of the
Prestige.
Ping the Prestige from your computer.
If you cannot ping the Prestige, check the IP addresses of the Prestige and your computer. Make sure your computer is set to get a dynamic IP address; or if you want to use a static IP address on your computer, make sure that it is on the same subnet as the Prestige.
Make sure you entered the correct username and password. The default username is “admin” and the default password is “1234”.
If you have forgot your username or password, refer to Section A.4.
If these steps fail to correct the problem, contact the distributor.
Prestige 623ME-T User’s Guide
I cannot access the web configurator.
Chart A-5 Troubleshooting Web Configurator
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Make sure you are using the correct IP address of the Prestige. Check the IP address of the
Prestige.
Make sure that there is not an SMT console session running.
Your computer’s and the Prestige’s IP addresses must be on the same subnet for LAN access.
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If you changed the Prestige’s LAN IP address, then enter the new one as the URL.
Remove any filters in SMT menu 3.1 (LAN) or menu 11.5 (WAN) that block web service.
The web configurator does not display properly.
Chart A-6 Troubleshooting Internet Browser Display
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Make sure you are using Internet Explorer 5.0 and later versions.
Delete the temporary web files and log in again.
In Internet Explorer, click Tools, Internet Options and then click the Delete Files ... button.
When a Delete Files window displays, select Delete all offline content and click OK. (Steps may vary depending on the version of your Internet browser.)
A.4 Login Username and Password
I forgot my login username and/or password.
Chart A-7 Troubleshooting Login Username and Password
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If you have changed the password and have now forgotten it, you will need to upload the default configuration file. This will erase all custom configurations and restore all of the factory defaults including the password.
Press the RESET button for five seconds, and then release it. When the SYS LED begins to blink, the defaults have been restored and the Prestige restarts.
Troubleshooting A-3
Prestige 623ME-T User’s Guide
Chart A-7 Troubleshooting Login Username and Password
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The default username is “admin”. The default password is “1234”. The Password and Username fields are case-sensitive. Make sure that you enter the correct password and username using the proper casing.
It is highly recommended to change the default username and password. Make sure you store the username and password in a save place.
I cannot access the Prestige from the LAN or ping any computer on the LAN.
Chart A-8 Troubleshooting LAN Interface
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Check the Ethernet LEDs on the front panel. A LAN LED should be on if the port is connected to a computer or hub. If the 10M/100M LEDs on the front panel are both off, refer to Section A.1.2.
Make sure that the IP address and the subnet mask of the Prestige and your computer(s) are on the same subnet.
Initialization of the ADSL connection failed.
Chart A-9 Troubleshooting ADSL Connection
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Check the cable connections between the ADSL port and the wall jack. The DSL LED on the front panel of the Prestige should be on.
Check that your VPI, VCI, type of encapsulation and type of multiplexing settings are the same as what you collected from your telephone company and ISP.
Restart the Prestige. If you still have problems, you may need to verify your VPI, VCI, type of encapsulation and type of multiplexing settings with the telephone company and ISP.
Prestige 623ME-T User’s Guide
I cannot get a WAN IP address from the ISP.
Chart A-10 Troubleshooting WAN Interface
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The ISP provides the WAN IP address after authenticating you. Authentication may be through the user name and password, the MAC address or the host name.
The username and password apply to PPPoE encapsulation only. Make sure that you have entered the correct Service Type, User Name and Password (be sure to use the correct casing).
Refer to the WAN Setup chapter (web configurator) or the Internet Access chapter (SMT).
I cannot access the Internet.
Chart A-11 Troubleshooting Internet Access
1 Make sure the Prestige is turned on and connected to the network.
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If the DSL LED is off, refer to Section A.1.3.
Verify your WAN settings. Refer to the WAN Setup chapter (web configurator) or the Internet
Access chapter (SMT).
Make sure you entered the correct user name and password.
(In Germany) Make sure you have a UR-2 line. Contact your local telephone company for more information.
Internet connection disconnects.
Chart A-12 Troubleshooting Internet Connection
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Check the schedule rules. Refer to the Call Scheduling chapter (SMT).
If you use PPPoE encapsulation, check the idle time-out setting. Refer to the WAN chapter (web configurator) or the Remote Node Configuration chapter (SMT).
3 Contact ISP.
Troubleshooting A-5
Prestige 623ME-T User’s Guide
I cannot connect to a remote node or ISP.
Chart A-13 Troubleshooting Connecting to a Remote Node or ISP
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Check menu 4 or WAN screen to verify that the username and password are entered properly.
In menu 11.1, verify your login name and password for the remote node.
If these steps fail, you may need to verify your login and password with your ISP.

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