ATT broadband red light 1

AT&T Broadband Red Light (10 Easy Fixes!)

AT&T has over 15 million broadband internet subscribers and is consistently rated as one of the top 3 internet service providers every year. While AT&T has many great home office internet packages to choose from, they are not without their share of issues. One such issue highly reported by users is the AT&T broadband red light error.

AT&T Broadband Red Light

The AT&T broadband red light signifies the gateway is either attempting to connect or cannot connect to the AT&T network. If the gateway is blinking or solid red for more than 15 minutes, disconnect the DSL broadband cable on both ends, wait one minute, and plug it back in.

I know, it almost sounds too easy. But, simply disconnecting and then reconnecting the DSL broadband cable on both ends will solve the problem for most users.

AT&T has used more than 20 different modems and gateways over the years. All of these gateways, with the exception of the newer BGW320 gateway, have a broadband status light that is used to signal various connectivity states.

Depending on your specific gateway model, you may encounter one or all three of these AT&T broadband red light signals:

  1. Flashing / Blinking Red: The gateway can’t connect to the network, or isn’t detecting a DSL signal.
  2. Flashing / Blinking Red and Green: The broadband connection has failed to be established for more than three consecutive minutes. The light will switch to flashing green when attempting or waiting to establish a broadband connection, alternating with a five second steady red light. This pattern continues until the broadband connection is successfully established.
  3. Solid Red: No signal is detected.
AT&T Gateway light meanings

If you are interested in understanding the meaning of all the different gateway status light combinations, you can use your model number to look it up on the official AT&T website.

A solid green broadband light indicates the gateway is successfully connected to the network. That’s the goal.

Something to keep in mind is that it can often take between 5 to 15 minutes for the gateway to connect to the internet. For this reason, if you observe any of these red light signals, allow some time to pass before jumping straight into troubleshooting.

If the issue persists after 15 minutes, I recommend following each of the detailed troubleshooting steps below in the order in which they appear.

Step 1: Disconnect And Reconnect The DSL Broadband Cable

If your equipment came directly from AT&T, you can identify the DSL broadband cable by its green color.

Before attempting any other troubleshooting steps, the first thing you should do is disconnect the DSL broadband cable on both ends, wait one minute, and plug it back in

AT&T Gateway DSL cable connection

Be sure to unplug the DSL broadband cable from both the DSL port in the back of the gateway and from the wall jack.

While this sounds too good to be true, countless users have indicated that this simple fix worked for them.

Step 2: Check If There Is An AT&T Service Outage In The Area

Sometimes when your gateway is disconnected from the internet, it is not a result of faulty equipment but instead it is due a local internet outage.

Use your cellphone to perform a local AT&T service outage search.

ATT service outages near you

You can also search “AT&T outage” and your city on Google or Twitter to see if there are any internet outages in your area.

If there is a local outage, continue to monitor the situation. In the meantime, if your cellular data plan allows, consider using your cellphone as a WiFi hotspot.

Step 3: Confirm Correct Cable Connections

It is also not uncommon for the issue to be a result of incorrect gateway cable connections.

Therefore, it is critical to make sure that you are using the correct cables and that the cables are connected to the correct ports.

To properly connect your gateway, follow these 3 steps:

  1. Plug one end of the power cable into a working wall outlet and the other end into the power port in the back of the gateway.
  2. The DSL cable is a thinner standard telephone cable and is green and labeled Data Cable. Make sure the DSL cable is plugged into the correct wall jack and the correct DSL port on the back of the gateway.
  3. Insert the white Ethernet cable into your PC and the corresponding Ethernet port on the back of the gateway.
How to properly connect your AT&T Gateway

A solid green broadband light indicates the gateway is successfully connected to the network.

Step 4: Check For Damaged Or Loose Cables

Correctly connecting the power, DSL and Ethernet cables is useless if they are damaged or not firmly connected. Many users have indicated that damaged or loose cables were ultimately to blame.

First, carefully inspect the DSL and Ethernet cables for any visible damage.

Look at the heads on either end of the cables. Do you notice any visible chips or cracks in the plastic? Be sure to also straighten out any bends, kinks or indents on any of the cables.

Next, confirm that the connection on BOTH ends of all the cables are secure.

What may seem like an insignificant break in connection can be responsible for your struggling internet. Push all cable ends in firmly. You should also consider replacing any old Ethernet cables with new ones.

Lastly, confirm that the power cable block is displaying a steady green light.

Power supply block

Step 5: Reset The Network

Internet providers assign temporary IP addresses to each of your devices. Oddly enough, these addresses can change at any time!

Sometimes your AT&T broadband red light indicates that the router didn’t catch the IP change, resulting in a syncing issue.

To test this, you’ll need to restart the entire network.

To reset the network, you can perform a standard gateway reset or you can try power cycling the gateway. I recommend first attempting a standard reset. If that doesn’t work, attempt to power cycle the device.

To perform a standard reset, locate the red reset button on the back of the gateway.

AT&T gateway reset

Hold the reset button button down for 5 – 10 seconds, and then release. Allow the device 15 minutes to boot back up.

IMPORTANT NOTE: Be careful not to hold the reset button for to long as you will lose all of your gateway settings. If you hold the reset button down for 15 seconds or longer you will perform a factory reset. We have a few more fixes to try before we attempt a factory reset on step 8.

To power cycle the device, while the gateway is on, disconnect the device from the power supply. Then, wait approximately 2 minutes.

Next, reconnect the gateway and wait approximately 15 minutes. Your internet should be back up and running!

Step 6: Relocate The Gateway

The location of your gateway can have a significant impact on your internet connection.

For ideal placement, relocate the gateway to a central, high-up location away from other devices.

Because the AT&T gateway sends signals in every direction, placing it low to the ground or tight against a wall can interfere with the signal. This results in decreased coverage!

Optimize the gateway location

Gateway Location Recommendations:

  • Make sure the gateway is in an open area
  • Place the gateway in a central, raised location
  • Try to avoid enclosed areas like the corner of a wall
  • Move other devices as far away from the gateway as possible
  • Do not place the router behind a TV

By optimizing the gateway’s location in your home, you dramatically improve your internet connection.

Step 7: Limit The Number Of Connected Devices

If there are too many many devices on your network, your internet can become overloaded.

This can be due to an unwanted neighbor freeloading on your WiFi, or your spouse hogging up all the bandwidth by watching too many high definition movies.

To see how much bandwidth each device is using on your network, you’ll need to sign into your Gateway User Interface (GUI).

Accessing the GUI on any and all AT&T gateway models is the same.

Simply enter into a browser URL bar. Once there, you will be able to view bandwidth usage by device.

Once you have identified the guilty party or if there is an unknown device identified, manually remove them.

Step 8: Factory Reset The Gateway

Another fix you can try is performing a factory reset.

Unlike a standard reset, a factory reset will fully restore your device to “new”. In the process, any and all custom settings including your username and password will be lost.

Keep this in mind before proceeding.

To factory reset the gateway, hold the reset button on the back of the device down for 15 seconds.

Now wait approximately 15 minutes for the gateway to make a connection to the network.

Step 9: Check Your AT&T Account Status

Many users have also indicated that their AT&T account was the source of the problem.

Check your account status by logging into your AT&T account.

Is the correct payment information listed? How about the correct address and overall profile information?

Confirm your account is up to date and active.

Step 10: Get A Different AT&T Gateway Model

It is important to note that this step involves getting a different gateway model, and not just getting a new replacement of your current model.

Users have suggested that some of the newer AT&T gateway models have firmware update issues.

Every time their gateway attempts a firmware update, their internet disconnects.

In some instances, users are able to perform a standard gateway reset and their internet will work again. At least until the next firmware update takes place, then it would happen all over again.

More specifically, this issue has been frequently reported with the BGW210 gateway model.

Users who subsequently switched to the Pace 5268AC, reported that the issue did not happen again.


The AT&T broadband red light signifies the gateway is either attempting to connect or cannot connect to the AT&T network. If the gateway is blinking or solid red for more than 15 minutes, disconnect the DSL broadband cable on both ends, wait one minute, and plug it back in.

If disconnecting and then reconnecting the DSL broadband cable on both ends does not solve the problem, try these additional troubleshooting steps in order:

  1. Check for local internet outages
  2. Confirm cable connections are correct
  3. Check for damaged or loose cables
  4. Perform a standard reset and power cycle the gateway
  5. Change the location of your gateway
  6. Limit the number active devices
  7. Perform a gateway factory reset
  8. Make sure your AT&T account is active
  9. Get a different AT&T gateway model

Unfortunately, these fixes won’t solve the problem for everyone.

If you are still having issues despite attempting each of these troubleshooting steps, you can call AT&T support at 844-413-9929.

If this post helped you connect to the internet, or if you solved your issue some other way, be sure to leave me a comment below so that we can include it!

Additional internet connectivity troubleshooting support provided by the Flexible Worker:

  1. Frontier router lights
  2. Cox router blinking orange / green

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