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Knowledge document #3620

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

The FRITZ!Box is optimally prepared for use with Swisscom. Simply connect the FRITZ!Box to the fiber optic modem and enter your personal login information in the FRITZ!Box user interface. The complete FRITZ!Box range of functions for internet, telephony, and television (blue TV) 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 Connecting the FRITZ!Box

  1. Use a network cable to connect the "WAN" port on the FRITZ!Box to the LAN port on the fiber optic modem (ONT), for example use the network cable included with delivery.

2 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. Click "Internet" and then "Account Information".
  4. Select "DSL or fiber optic modem" from the drop-down list "Internet connection via".
  5. Select "Other internet service provider".
  6. Click "Apply" to save the settings.

3 Setting up telephony in the FRITZ!Box

Requesting login information for telephony

  1. Ask Swisscom to send you your login information for telephony (for example username and password), via SMS as described in this guide.

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 41441234567) 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 Swisscom by "Username" and "Password".
  8. Enter swisscom.ch in the field "Registrar".
  9. Enter fs1.ims.swisscom.ch in the "Proxy server" field.
  10. Click "Additional Settings" to display all of the settings.
  11. Enable the option "Use telephone number for registration".
  12. Click "Next" and follow the wizard's instructions.

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 outgoing 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 on "OK" to save the settings.