If you are experiencing problems with your DSL connection, you might see that the 
(DSL) LED light on your modem is flashing or unlit.
When your equipment and Internet service is functioning correctly, the DSL LED flashes when the your modem or gateway is establishing a connection with your DSL service. The LED typically flashes for about 30 seconds, then your modem or gateway should complete its connection.
If the DSL LED flashes continuously or doesn’t light, you might have a faulty DSL connection caused by Internet service provider (ISP) problems or home wiring issues.
To troubleshoot a flashing or unlit DSL LED on your NETGEAR DSL modem:
- Remove and reconnect your phone cable into your DSL modem and your wall jack to ensure that the cable is plugged in securely. The cable should click when it is pushed into place.
- Make sure that all devices using your telephone lines are plugged into a DSL filter, including fax machines, satellite receivers, and alarm systems. These filters prevent interference with your DSL signal. For more information, see Why do I need ADSL micro filters and how do I install them?
- Make sure that the phone cable coming from your DSL modem is plugged directly into a wall outlet. Try bypassing any splitters or other devices that you might have installed, as they can sometimes cause interference with your DSL signal.
- Try moving your DSL modem to a different telephone wall jack. Internal wiring issues might be causing problems with a specific wall jack or group of wall jacks in your home.
- If you have PHLO+ DSL or line share ADSL service (meaning that your phone and DSL share a line), try turning off your DSL modem and listen for audible noise on the phone line. You can also connect an analog telephone to the phone line that is plugged into your DSL modem and make sure that the phone line has a clean dial tone. In either situation, if you hear snaps or static on the line or when making a phone call, your telephone company might need to repair your wiring before DSL service can work reliably.
- To eliminate the possibility of home telephone wiring issues, try connecting your DSL modem directly to the MPOE (usually a grey telephone box on the outside of your home where telephone pole wiring connects to your house). If your DSL modem works correctly when connected to the MPOE, your home telephone wiring might be faulty.
If none of the preceding troubleshooting steps help you resolve your DSL problems, contact your ISP or phone service provider for additional assistance.
For more information: