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Knowledge Base document #3741

Setting up FRITZ!Box for use with a Caiway line

The FRITZ!Box is optimally prepared for use with Caiway. Simply connect the FRITZ!Box to the fibre optic connection and select Caiway as the internet service provider in the FRITZ!Box.

The complete FRITZ!Box range of functions for internet, multimedia, and smart home is then available to all of the devices in your home network without restriction.

Important:Currently, we do not have any information about how to use Caiway's telephony function with the FRITZ!Box. As soon as we find out, we will update this guide.

Requirements / Restrictions

  • AON or GPON fibre optic connection. The FRITZ!Box cannot be used directly with XGS-PON fibre optic connections.

    NoteOn an XGS-PON connection you can configure the FRITZ!Box for the internet connection via 'WAN' and use it behind the fibre optic modem from the internet service provider.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Inserting the SFP module into the FRITZ!Box

The FRITZ!Box is available in several different product variants, each of which is delivered with different components. If no SFP plug-in module was inserted in your FRITZ!Box, perform the following steps:

  1. Insert the SFP plug-in module 'FRITZ!SFP AON' into the fibre slot of the FRITZ!Box.
    Inserting the SFP plug-in module into the FRITZ!Box

2 Connecting the FRITZ!Box to your fibre optic connection

  1. Remove the dust protection caps from the fibre optic cable, the SFP module in the FRITZ!Box, and from the fibre optic socket.
  2. Connect the fibre optic cable to the SFP module in the FRITZ!Box and to the fibre optic socket. Do not bend the fibre optic cable and do not hold the ends of the cable in front of your eyes.

    Note:Some fibre optic connections use a fibre terminating unit from Attema which requires a special fibre optic cable that is clamped into a carriage in the socket. Such cables are available from vendors. You can find information on selecting a suitable cable in our guide Which fibre optic cable do I need?

    Connecting the FRITZ!Box to the fibre optic connection

3 Plugging the FRITZ!Box in

  1. Plug the power adapter into the FRITZ!Box's power socket and plug it into a power socket.

4 Unlocking your FRITZ!Box

Modem ID on the FRITZ!Box's type label
  1. If you are using the FRITZ!Box with an XGS-PON fibre optic connection, call Caiway's customer service at 088 2249111 to have them unlock the FRITZ!Box for your connection. For this, give them the 'modem ID' on the FRITZ!Box's type label. If you are asked for the MAC address of the FRITZ!Box, give them a fictitious MAC address, for example ab:00:00:00:00:00.

5 Configuring the internet connection in the FRITZ!Box

  1. Open the FRITZ!Box user interface.
  2. Enter the FRITZ!Box password given on the type label of the FRITZ!Box and click on 'Log In'.
  3. If the wizard for internet access does not start automatically, click on 'Wizards' and then on 'Configure the Internet Connection'.
    Calling up the FRITZ!Box wizard
  4. Select 'DELTA / Caiway' from the drop-down list.
  5. Click on 'Next' and follow the wizard's instructions.
  6. Now the FRITZ!Box checks whether the internet connection can be established. Configuration is complete as soon as the message 'The internet connection check was successful' is displayed.

    Important:If the internet connection check fails, your internet access may not have been activated yet. In this case, contact Caiway.



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