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

The FRITZ!Box is optimally prepared for use with Stiegeler. Simply connect the FRITZ!Box to the fiber optic connection and enter your personal account information in the FRITZ!Box user interface. If Stiegeler provided you with the FRITZ!Box, it will be configured automatically.
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
- Have your personal account information for internet access and the login information for telephony that you received from Stiegeler ready.
Note:You will find the account information in the letter that Stiegeler sent you before activating your connection. If you did not receive your account information, contact Stiegeler.
- If you have a GPON fiber optic connection, make note of the ONT installation ID on the type label of the ONT that you received from Stiegeler.
2 Unlocking your FRITZ!Box
Various technologies are used for Stiegeler's fiber optic connections, some of which require activating the FRITZ!Box:

- Call Stiegeler's customer service at 07673 8889924 and ask whether your fiber optic connection is switched as an AON or a GPON connection.
- If you have a GPON connection, have Stiegeler unlock the FRITZ!Box for your line. For this, give them the 'modem ID' on the FRITZ!Box's type label.
3 Connecting the FRITZ!Box to your fiber optic connection
- Remove the dust protection caps from the fiber optic cable, the 'Fiber' socket on the FRITZ!Box, and from the fiber optic socket.
- 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
4 Plugging the FRITZ!Box in
- Plug the power adapter into the FRITZ!Box's power socket and plug it into an electrical socket.
5 Configuring the internet connection in the FRITZ!Box
- Open the FRITZ!Box user interface.
- Enter the FRITZ!Box password given on the type label of the FRITZ!Box and click on 'Log In'.
- 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 - Select 'other internet service provider' from the drop-down list and click on 'Next'.
- Enter the account information you received from Stiegeler in the fields.
- If you are using the FRITZ!Box on a GPON fiber optic connection enable the 'ONT Installation ID needed' option and enter it in the corresponding field. The option is not displayed on AON fiber optic connections.
- Click on 'Next' and follow the wizard's instructions.
- 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 Stiegeler.
6 Setting up telephony in the FRITZ!Box
Configuring phone numbers
- Click on 'Telephony' in the FRITZ!Box user interface.
- Click on 'Phone Numbers' in the 'Telephony' menu.
- Click on the 'New Phone Number' button.
- Select 'Other provider' from the drop-down list.
- Enter your phone number including the area code (for example 030123456) by 'Telephone Number for Registration'.
- Enter your phone number (for example 123456) by 'Internal phone number in the FRITZ!Box'.
- Enter your phone number including the area code (for example 030123456) by 'Username'.
- For the 'Password', enter the password you received from Stiegeler.
- Enter voip.stiegeler.com in the 'Registrar' field.
- Click on 'Additional Settings' to display all of the settings.
- Select 'RTP or in-band' for 'DTMF transmission'.
- Click on 'Next' and follow the wizard's instructions.
Adjusting the phone numbers
- Click on 'Telephony' in the FRITZ!Box user interface.
- Click on 'Phone Numbers' in the 'Telephony' menu.
- Click on the
(Edit) button for the respective phone number. - Click on 'Additional Settings' to display all of the settings.
- By 'Suppress outgoing Caller ID (CLIR)', select the setting 'CLIR via RFC 3325 (ID)'.
- Click on 'Apply' to save the settings.
Assigning phone numbers
- Click on 'Telephony' in the FRITZ!Box user interface.
- Click on 'Telephony Devices' in the 'Telephony' menu.
- 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.
- 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.
- 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).
- Click on 'Apply' to save the settings.