User`s guide

Appendix C: Troubleshooting
Diagnosing the Modem’s Indicators
The Modem can be easily monitored through its comprehensive panel indicators. These indicators assist the network manager in
identifying problems the hub may encounter. This section describes common problems you may encounter and possible solutions
1. Symptom: Ready indicator does not light up (green) after power on.
Cause: Symptom External power supply
Solution: Check the power plug by plugging in another that is functioning properly. Check the power cord with another device. If
these measures fail to resolve the problem, have the unit power supply replaced by a qualified distributor.
2 .Symptom: Link indicator does not light up (green) after making a connection.
Cause: Network interface (e.g, a network adapter card on the attached device), network cable, or switch port is defective.
Solution:
2.1 Power off them Power on the VDSL Modem.
2.2 Verify that the switch and attached device are powered on.
2.3 Be sure the cable is plugged into both the switch and corresponding device.
2.4 Verify that the proper cable type is used and its length does not exceed specified limits.
2.5 Check the Modem on the attached device and cable connections for possible defects.
2.6 Replace the defective Modem or cable if necessary.
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