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Setting up the FRITZ!Box for use with a cable connection

You want to set up a FRITZ!Box Cable? ✔ Here you'll find the right step-by-step instructions for your connection.

The FRITZ!Box Cable is optimally prepared for use with a cable connection, regardless of whether you received it from your cable provider or purchased it in a store.

FRITZ!Boxes provided by cable providers are already unlocked for cable connections and are configured automatically.

If you purchased the FRITZ!Box in a store, you must ask your provider to unlock it and configure it once. If you are using your FRITZ!Box in Germany, use the guide that applies to your provider in Setting up the FRITZ!Box: Guides for different providers. If your internet service provider is not listed there, proceed as described in this guide.

1 Unlocking your FRITZ!Box

If you purchased your FRITZ!Box from a retailer, your cable provider must unlock it first:

Important:In Germany, you can only use the FRITZ!Box 6490 Cable with the article number 20002778 with all cable connections. Models with other AVM article numbers are not intended for use with all cable connections.

Serial number and CM MAC on the bottom of the FRITZ!Box
  1. Have your cable provider unlock your FRITZ!Box. Depending on the provider, you can either use an activation portal or call their customer service to activate it.
    • With some providers, the serial number and the "CM MAC" address on the bottom of the FRITZ!Box are required to unlock it.

2 Connecting the FRITZ!Box to the cable connection

  1. Insert one end of the coaxial cable into the "Cable" port on the FRITZ!Box. Use the coaxial cable supplied with the FRITZ!Box, for example.
  2. Insert the other end of the coaxial cable into the socket for the internet connection (data socket) on the multimedia outlet in your home.

3 Configuring the internet connection in the FRITZ!Box

  1. Open the FRITZ!Box user interface.
  2. Enter the FRITZ!Box password on the bottom of the device and click "Log In".
  3. If the menu "Set up Internet Connection" is not displayed automatically:
    1. Click "Internet" and then "Account Information".
    2. Enable the option "Internet connection via cable".
  4. Wait until the Power / Cable LED remains lit.

    Important:Depending on the signal strength and the way your connection is configured, this may take up to 10 minutes. During this time, the Power / Cable LED flashes and then remains lit as soon as the connection has been established. If the LED flashes continuously, the cable connection has not been activated yet or the service is disrupted. In this case, contact your cable provider.

  5. If your cable provider did not unlock the FRITZ!Box yet:
    1. Open a new window in your web browser and call up a web page of your choice, for example
      • Now you will be redirected to your cable provider's portal for unlocking your FRITZ!Box.
    2. Follow the instructions given in the activation portal and make note of the login information for your telephone numbers, if they are displayed during the unlocking procedure.
  6. Click "Apply" or "Next" in the FRITZ!Box user interface to save the settings. Restart the FRITZ!Box to complete the configuration of your internet connection.

4 Setting up telephony in the FRITZ!Box

If you want to connect telephones to the FRITZ!Box and use them to make calls over the internet:

  1. Configure the internet telephone numbers in the FRITZ!Box.