For this, it is necessary that the telephone connection (Internet is not sufficient), is configured/connected to the FritzBox.
To activate the call monitor in the FritzBox, enter the following code on your phone connected to the FritzBox: #96*5*
You will hear an acknowledgement tone on the phone.
Without phone, the activation has to be done via the FritzBox user interface:
- Open a browser on a PC that is connected to the FritzBox via WLAN or LAN.
- Go to the FritzBox user interface and log in with your user data.
- Go to "Telephony" > "Telephone Book" in the left menu and add a new entry. Enter the number #96*5* and assign it the name "Activate call monitor on".
- Now click again on the left menu on "Telephony" > "Calls" > "Dialer". Activate the option "Use Dialer" in the tab "Dialer". Then click on "Apply".
- Now click on the created number in the phone book. Now Telnet is activated.
- If you want to deactivate Telnet, do the same. But use the number #96*4* instead of the phone number given above.