DSL Support


Ensure that your computer, your DSL modem, and any equipment in between is plugged in and powered on. If you have done this and your modem is still not

receiving power, please…

Call Cyberonic at 888-929-2372 for further assistance.

DSL Sync

Before proceeding any further with troubleshooting, always reboot your computer and power-cycle your DSL modem. Doing so can solve many common

problems, often unexpectedly.

Check light status: For your connection to work, your DSL modem needs to connect to equipment in your local Central Office via a phone line. Your DSL modem

has a light that displays the status of this connection. The label on the light may vary depending on the model of your DSL modem, but it will always be labeled 

DSLSync, or Link. This light should flash slowly while the modem is searching for a signal and once a signal has been established, it will turn solid green.

If the DSL light is NOT solid green, begin by checking the phone cable between your modem and the wall jack. There should be no splitters or DSL filters

connected to this cable. One end should be connected directly to a wall jack and the other end should be connected directly to the DSL or Line port on your

modem. Note that some modems have a filtered phone port in addition to a DSL/Line port. If you have one of these modems, ensure that you are connected to the

DSL/Line port and not the phone port.

DSL filters: DSL filters separate your voice signal from your high-speed Internet signal so you can talk on the phone and be connected to the internet at the same

time. If you have stand-alone/dryline ADSL, SDSL or IDSL, you don’t need to worry about filters. If you have ADSL that was installed on an existing phone line, you

need to have DSL filters installed on any device other than your DSL modem that is using that phone line. When DSL filters are not used or not installed properly,

your DSL modem may not sync, or you may experience static on your phone line or slow connection speeds. Common devices that require filtering include

phones, fax machines, DVRs, alarm systems, and dial-up modems. Filters should be connected to a wall jack and then connected to the device being filtered with

a phone cord. If your modem is still not synced after following the above steps, please…

Call Cyberonic at 888-929-2372 for further assistance.

Internet Connectivity

Check light status: Most DSL modems also have an Internet light which indicates whether or not the modem is able to communicate with the internet. If this light

is flashing green, it means that your modem is able to communicate with the internet. If you have already verified power and DSL sync, but your Internet light is off

or red, please…

Call Cyberonic at 888-929-2372 for further assistance.


Once you have verified that your modem is synced and connected to the Internet, your next step is to verify that the computer you are using is able to communicate

with your DSL modem.

Check light status: All DSL modems have lights most often labeled LANEthernet, or 123, & 4 which correspond to Ethernet ports, or a single Ethernet port on

the modem. When a computer or other device is connected to one of these ports, the corresponding light on the modem should turn solid green when idle, or 

flash green when data is being sent or received.

If this light is not lit, check the cable that connects the DSL modem to your computer. Disconnect the cable on each end and plug it back in to ensure that it is

connected securely. If reconnecting your current cable doesn’t help, try replacing the cable if possible.

Isolate your LAN: If your computer is not connected directly to your DSL modem, try connecting them directly to each other to ensure that an intermediate network

device is not causing your problem. If you have followed the above steps and your LAN light is still off, please…

Call Cyberonic at 888-929-2372 for further assistance.