FRITZ!Box 7581 Service - Knowledge Base
AVM Content
Number of telephony and DECT devices that can be used with the FRITZ!Box
You can use different types of telephony devices, for example telephones, fax devices, answering machines, or PBXs, with the FRITZ!Box. Your line type determines how many devices can be used.
1 DECT devices
The following DECT devices can be registered with the FRITZ!Box at the same time:
- six cordless telephones, for example FRITZ!Fon C5
- six DECT repeaters, for example FRITZ!DECT Repeater 100
- twelve radiator controls, for example FRITZ!DECT 300
- ten switchable sockets, for example FRITZ!DECT 210
- ten FRITZ!DECT smart buttons
- ten smart home sensors from other manufacturers, for example Wondrwall
2 IP telephones and IP door intercom systems
You can register a maximum of ten IP telephones (for example FRITZ!App Fon) or IP door intercom systems with the FRITZ!Box.
3 Analog devices
The FRITZ!Box has different sockets for analog devices:
- "FON 1" and "FON 2" for devices with an RJ11 plug
- "FON 1" and "FON 2" for devices with a TAE plug
You can connect two analog devices to the FRITZ!Box at the same time, for example a telephone, fax machine, and/or door intercom system. One "FON 1" socket and one "FON 2" socket have to stay free (not allocated).
4 Integrated answering machine and fax function
You can use the FRITZ!Box as a fax and answering machine, without having to connect any additional devices. The FRITZ!Box can be used to send and receive faxes and you can configure up to five different answering machines.