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Knowledge Base document #3841

Setting up the FRITZ!Box for use with a fiber optic connection from Wisotel

The FRITZ!Box is optimally prepared for use with Wisotel. Simply 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 smart home is then available to all of the devices in your home network without restriction.

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 Wisotel ready.

    Note:you can find the account information in the welcome letter or data sheet from Wisotel. If you did not receive any account information, refer to Wisotel.

2 Connecting the FRITZ!Box to your fiber optic connection

  1. Remove the dust protection caps from the fiber optic cable, the 'Fiber' socket on the FRITZ!Box, and from the fiber optic socket.
  2. Connect the fiber optic cable to the 'Fiber' socket on 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

3 Plugging the FRITZ!Box in

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

4 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 'other internet service provider' from the drop-down list and click on 'Next'.
  5. Enter the account information you received from Wisotel in the fields.
  6. Click on 'Change connection settings'.
  7. Enable the 'Use VLAN for internet access' option.
  8. Enter 7 in the 'VLAN ID' field.
  9. Click on 'Next' and follow the wizard's instructions.
  10. 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 Wisotel.

5 Setting up telephony in the FRITZ!Box

Setting up the telephony connection

  1. Click on 'Telephony' in the FRITZ!Box user interface.
  2. Click on 'Phone Numbers' in the 'Telephony' menu.
  3. Click on the 'Line Settings' tab.
  4. Click on 'Changing the Settings' in the 'Telephony connection' section.
  5. Click on 'Connection Settings for DSL/WAN'.
  6. Enable the 'VLAN required for internet telephony' option.
  7. Enter 6 in the 'VLAN ID' field.
  8. Enter 0 in the 'PBit' field.
  9. Enable the option 'Use a separate connection (PVC) for Internet telephony'.
  10. By 'Is account information required?', enable the 'No' option.
  11. Enable the 'Obtain the IP address automatically (DHCP)' option.
  12. Click on 'Apply' to save the settings.

Configuring phone numbers

  1. Click on 'Telephony' in the FRITZ!Box user interface.
  2. Click on 'Phone Numbers' in the 'Telephony' menu.
  3. Click on the 'New Phone Number' button.
  4. Select 'Other provider' from the drop-down list.
  5. Enter your telephone number including the area code (for example 030123456) by 'Telephone Number for Registration'.
  6. Enter your telephone number (for example 123456) by 'Internal telephone number in the FRITZ!Box'.
  7. Enter the login information you received from Wisotel by 'Username' and 'Password'.
  8. Enter sip.wisotel.de in the 'Registrar' field.
  9. Click on 'Next' and follow the wizard's instructions.

Assigning phone numbers

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

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

  4. From the 'Outgoing Calls' drop-down list, select the number to be used by the telephony device for making outgoing calls. If you do not select a phone number, the number entered under 'Telephony > Telephone Numbers > Line Settings' is used for making calls.
  5. Select the phone 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 on 'Apply' to save the settings.



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