ZyXEL Communications VES-1124 -, User Manual

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VES-1124 User’s Guide
Troubleshooting A
Appendix A
Troubleshooting
This appendix covers potential problems and possible remedies. After each problem description, some
steps are provided to help you to diagnose and to solve the problem.
VDSL LED(s)
A VDSL LED is not on.
Chart 1 Troubleshooting the DSL LED(s)
STEPS CORRECTIVE ACTION
1 Disconnect the phone wire coming from the USER port of the VES and connect the VDSL modem
directly to the USER port of the VES using a different telephone wire.
If the LED turns on, check for a problem with the building’s phone wire.
2 Set the VDSL modem to “auto-negotiate”. If this is not possible, set it to 100 Mbps, half duplex mode.
3 Use the VDSL CI commands to reset and reconnect the VDSL channel.
4 If the LED remains off, contact the distributor.
Data Transmission
The VDSL LED is on, but data cannot be transmitted.
Table 23-1 Troubleshooting Data Transmission
STEPS CORRECTIVE ACTION
1 Disconnect the phone wire coming from the USER port of the VES and connect the VDSL modem or
router directly to the USER port of the VES using a different telephone wire.
If data can be transmitted, check for a problem with the building’s phone wire.
2 Check to see that you are using the correct VDSL mode.
3 Check the VLAN configuration of the VES.
4 Do a loopback test on a port from the Diagnostic screen.
5 Ping the VES from the user’s computer.
6 If you cannot ping, connect the VDSL modem to another VES VDSL port.
If the VDSL modem works with a different port, then there may be a problem with the original port.
Contact the distributor.
7 If using a different port does not work, try a different VDSL modem or router with the original port.