FRITZ!Box 4020 Service - Knowledge Base
FRITZ!Box 4020 Service
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Number of telephony devices that can be used with the FRITZ!Box
You can use various telephony devices with the FRITZ!Box. Your line type determines how many devices can be used.
1 IP telephones
You can register a maximum of ten IP telephones (for example FRITZ!App Fon) with the FRITZ!Box.
2 Integrated answering machine
You can use the FRITZ!Box as an answering machine, without having to connect any additional devices. You can configure up to five different answering machines.