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Knowledge document #1023

Do connected telephones work when the FRITZ!Box is not plugged in?

The FRITZ!Box must be connected with the power supply, otherwise you cannot make calls with the connected telephones. If a telephone does not require its own power supply and you have a landline, you can connect the telephone directly to your landline if there is a power outage.

If you have an IP-based connection, whether you can still conduct calls when there is a power outage depends on your provider.

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