FRITZ!Box 7430 Service - Knowledge Base
FRITZ!Box 7430 Service
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Do telephones connected to the FRITZ!Box work when it is not plugged in?
Your FRITZ!Box must be plugged in; otherwise, you cannot use the telephones connected to it to conduct calls.
Note:However, if the telephone does not require its own power supply and you have a landline, then you can connect the telephone directly to your landline if there is a power outage.