FRITZ!Box 3390 – Service - Knowledge Base
Number of telephony devices that can be used with the FRITZ!Box
You can use various telephony devices with your FRITZ!Box. Your line type determines how many devices can be used.
1 IP telephones
2 Integrated answering machine
You can use your FRITZ!Box as an answering machine, without having to connect any additional devices. You can configure up to five different answering machines.