Set up telephone (FRITZ!Box router)

The setup instructions will also help if you are unable to make calls to the outside world or cannot be reached.

  1. Make sure that you are connected to the FRITZ!Box. The best way is via LAN cable (yellow). A connection via W-LAN (with a mobile device) is also possible.

  2. Open up an Internet browser (Firefox, Safari, Chrome or similar) and enter the address

If this is not possible, please try to put one of the following IP addresses: or in the URLbar.

  1. Click on "Telephony" in the user interface of the FRITZ!Box.
  2. In the "Telephony" menu, click on "Own telephone numbers".
  3. Click on the "New call number" button.
  4. If a drop-down list for selecting an Internet telephony provider is available, select "Teleboy". If this is not available, select "Other provider".

Note: Whether the drop-down list is available and which providers are displayed there depends on the country setting of the FRITZ!Box.

Enter the Internet number (telephone number) and the login data (e.g. user name, password, registrar) in the corresponding input fields.

VoIP settings

You have received the access data for the telephone separately by e-mail. You can also find them here in your customer account under "Set up".

Call number:

Internal telephone number:



SIP Registrar:

SIP Proxy:

---> See the example below - Please note the options that are enabled or disabled.

Click on "Next" and follow the instructions of the wizard.


Could you please check this option (see the picture below "PVC")?

This "PVC" tick must not be activated.

After another restart of the FRITZ!Box, it should now work.

The images do not have to be identical to the interface of your router, as new updates for the router are constantly being released. However, the terms and paths to the input fields should still be correct.

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