The lights on your DSL modem are flashing, solid, or off entirely.
While different models of modems may have different lights, certain ones are universal.
If this light is red or off make sure to double check your connection to the power outlet. Try unplugging and plugging back in or move to another outlet near the service port if possible. Verify you're using the power adapter that came with the modem.
This light indicates your Local Area Connection status. The LAN port is where you will plug your router into your modem. If your LAN light is red or blinking there is a good chance your router or connected device isn’t working properly.
This light is meant for modem router combos. In Wyoming this service is turned of by default. Therefore you will not see the light lit.
This light indicates the connection from your telephone jack to the modem and is how you connect out to the world wide web. If this light is red or off, there is a good chance you’ll be without service. Blinking is normal when first starting the router up as it makes its connection to TCT. However, if the light continues to blink for longer than 5-10 minutes, you may need to try another jack in the house or contact TCT.