How do I activate/deactivate the telephony function in the Home App?

Why does no call screen appear on Android devices?
How do I change the ringtone?
I don't want to be disturbed by phone calls, what should I do?
How do I block a number?
How do I activate/deactivate the telephony function in the Home App?
How can I copy my smartphone contacts to the Internet-Box?

In the Home App, you must activate the telephony function under "Telephone" > "Settings".
You must also be connected directly to the WLAN of the Internet box.

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