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Knowledge document #3715

Setting up the FRITZ!Box for use with a fiber optic connection from DNS:NET

The FRITZ!Box is optimally prepared for use with DNS:NET. Have DNS:NET activate the FRITZ!Box, connect the FRITZ!Box to the fiber optic connection, and enter your personal account information in the FRITZ!Box user interface.

The complete FRITZ!Box range of functions for internet, telephony, and television (DNS:NET IPTV) is then available to all of the devices in your home network without restriction.

Requirements / Restrictions

  • A FRITZ!Box with the SFP module "FRITZ!SFP GPON" is required for GPON fiber optic connections.
  • The FRITZ!Box cannot be used directly with XGS-PON fiber optic connections. However, on an XGS-PON connection you can configure the FRITZ!Box for the Internet connection via "WAN" and use it behind the fiber 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 Having your account information ready

  1. Have your personal account information for internet access and the login information for telephony that you received from DNS:NET ready.

    Note:You will find your account information in the DNS:NET customer portal under "Meine Dienste > Fiber > Zugangsdaten > Passwörter anzeigen". If your account information is not displayed there, contact DNS:NET.

2 Unlocking your FRITZ!Box

Modem ID on the FRITZ!Box's type label
  1. Call DNS:NET's customer service at 030 66765111 and ask whether your fiber optic connection is switched with GPON or XGS-PON and have them unlock the FRITZ!Box for your line. For this, give them the "modem ID" on the FRITZ!Box's type label.

3 Inserting the SFP module into the FRITZ!Box

  1. Insert the SFP module "FRITZ!SFP GPON" into the fiber slot of the FRITZ!Box.
    Inserting the SFP module into the FRITZ!Box

4 Connecting the FRITZ!Box to your fiber optic connection

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

    Note:You can find information on selecting a suitable fiber optic cable in our guide Which fiber optic cable do I need?

    Connecting the FRITZ!Box to the fiber optic connection

5 Plugging the FRITZ!Box in

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

6 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 "Log In".
  3. Click "Internet" and then "Account Information".
  4. Click on the "Internet Connection" tab and then on the "Fiber Optics" tab.
  5. Select "other internet service provider" from the drop-down list "Internet service provider".
  6. Enable the option "Fiber optics".
  7. Enter the account information you received from DNS:NET in the relevant fields.
  8. Click "Change connection settings".
  9. Enable the option "Use VLAN for internet access".
  10. Enter 37 in the field "VLAN ID".
  11. Click "Apply" to save the settings.
  12. 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 DNS:NET.

7 Setting up telephony in the FRITZ!Box

Configuring telephone numbers

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click the "New Telephone Number" button.
  4. Select "Other provider" from the drop-down list.
  5. Enter your telephone number including the area code (for example 05511234567) by "Telephone Number for Registration".
  6. Enter your telephone number (for example 1234567) by "Internal telephone number in the FRITZ!Box".
  7. Enter the login information you received from DNS:NET by "Username" and "Password".
  8. Enter sip.berlin.dns-net.de in the field "Registrar".
  9. Enter your area code by "Area code".
  10. Click "Next" and follow the wizard's instructions.

Adjusting the telephone numbers

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click the (Edit) button for the respective telephone number.
  4. Click "Additional Settings" to display all of the settings.
  5. By "Suppress outgoing Caller ID (CLIR)", select the setting "CLIR via display and username".
  6. Click "Apply" to save the settings.

Assigning telephone numbers

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephony Devices" in the "Telephony" menu.
  3. Click the (Edit) button for the respective telephony device.

    Important:If the telephony device was not configured yet, click the "Configure New Device" button and follow the wizard's instructions.

  4. From the drop-down list "Outgoing Calls", select the number to be used by the telephony device for making outgoing calls. If you do not select a telephone number, the number entered under "Telephone Numbers > Line Settings" is used for making calls.
  5. Select the telephone numbers to which the telephony device should react when you receive calls. You can select up to ten numbers (including the number for outgoing calls).
  6. Click "Apply" to save the settings.



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