TalkTalk Help

My router ADSL light is off/flashing

If your ADSL light is off or is flashing, it means you have no sync on your router and you cannot receive an internet connection.

Follow these quick steps to resolve your connection issues.

Step 1: Check your service is live

If you are a new customer check your welcome letter to make sure you have reached your go live date. Your broadband can go live any time up to midnight on your go live date.


Step 2: Reboot your router

Perform a full shut down and restart of your router leaving it off for at least 30 seconds before turning it back on.

The router can be restarted using the on/off button, this is usually located on the side or back of your router.


Step 3: Check for known issues

At TalkTalk we work hard to provide the best possible broadband service and if you ever have a problem, we want to help.

If you haven't already, it's a good idea to check the service status in your area to make sure there isn't a known service issue which could be affecting your broadband connection.


Step 4: Check your router is set up correctly

We have found that some problems can be caused by the equipment in your home. 

Watch our short video to check your router is set up correctly:

If you are a Fibre customer, check your Fibre Connection Setup.


Step 5: Check if you need to use microfilters

Some new telephone sockets have a microfilter already built in. If your phone socket has 2 holes and looks similar to this, you don’t need to add a microfilter to this socket. You will still need a microfilter on every other phone socket that is used in your home.






Please note: If you are a Fibre customer you don't need to worry about using microfilters in any socket and you can skip the next step.


Step 6: Check your microfilters

Both your voice and data signals are sent down the same line to your house so microfilters (also known as 'ADSL filters' or just 'filters') are used to prevent the two sets of signals interfering with each other. You need a microfilter on every phone socket that is used in your home. Try a new/different microfilter with your router at the master socket.

Problems you can experience with faulty/missing microfilters:

  • Speed and stability
  • Hear a high-pitched noise on the telephone line
  • Broadband disconnects when you use your phone line

Changing / installing your microfilters:


Make sure you are using your master socket

Your master socket is usually found at the front of your house close to the front door. Plugging your router into your master socket will give you the best connection possible. Remember to connect a microfilter to your master socket. Find out more about master sockets. Avoid using telephone line extension cables with your router, plugging it directly into your master socket. 


Try the test socket

The test socket is found inside some types of master socket and is used for testing if you have a fault.

When you connect your router into a test socket all of your internal wiring and extensions are disabled. This means you are able to test the service that is being sent to your property and rule out any problems with internal wiring or other equipment you may have connected.  

Please see Does my master socket have a test socket to check. If you don't have a test socket, continue to connect your router in your master socket with a microfilter.

test Socket



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