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Knowledge Base document #3620

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

The FRITZ!Box is optimally prepared for use with Swisscom. Simply connect the FRITZ!Box to the fibre 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 TV (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. Insert one end of a network cable into the 'WAN' port on the FRITZ!Box. Use the network cable supplied with the FRITZ!Box, for example.
  2. Insert the other end of the network cable into the LAN port on the fibre optic modem (ONT, Optical Network Termination).

2 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. Click on 'Internet' and then on 'Account Information'.
  4. Select 'DSL or fibre optic modem' from the drop-down list 'Internet connection via'.
  5. Select 'other internet service provider'.
  6. Enable the 'No' option in the 'Account Information' section.
  7. Click on '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 phone numbers

  1. Click on 'Telephony' in the FRITZ!Box user interface.
  2. Click on 'Telephone 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 phone number including the area code (for example 41441234567) by 'Telephone number for registration'.
  6. Enter your phone number (for example 1234567) by 'Internal phone 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 on 'Additional Settings' to display all of the settings.
  11. Enable the 'Use phone number for registration' option.
  12. 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.