Zolved community solution Createarticle_iconnew articleEditarticle_iconedit article

How to interpret the lights on my High Speed Internet Modem?

This article will tell you what the lights on your High Speed Internet Modem signify and how to interpret them.


Once you have power cycled your DSL modem, checked your setup and DSL filters (see zolved article How do I configure my modem when connecting to a PC?), your Internet connection should be up and running.

However, there can be instances when you find yourself not being able to get connected to the Internet easily. The reason for this, in all likelihood, is that there is a problem with your incoming (telephone) line. One way to verify this is having a look at the lights on the front of the modem panel to check your connection status.

Understanding what the High Speed Internet modem status lights indicate can help you identify and resolve internet connection issues.
Note: These lights will vary depending upon the type of modem you have.
  • When powering up the modem, all four lights will be green for approximately 30 seconds.

  • Observe the Power light, make sure that the power self-test completes successfully and the light turns a steady green.




  • Make sure that the modem is synchronized with the ADSL line card at the other end of the circuit by checking the DSL light. It may take up to 70 seconds for the modem to synchronize, at which point the DSL light will turn to a steady green.

  • Verify that the modem is properly wired to your computer’s Network Interface Card (NIC) by checking that the Ethernet light is a steady green.

  • Check that your modem is sending and receiving data by observing the Activity light. It will vary between steady and blinking green light when the modem is transmitting data.

    The following chart explains what the lights on the front panel of the modem indicate. Use this chart below to check the connection status whenever you have problems with your connection.


copyright © 2007, IPTouch, Inc.