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Knowledge document #1634

Number of telephony devices that can be used with the FRITZ!Box

You can use various telephony devices with the FRITZ!Box, for example telephones, fax machines, answering machines, or telephone systems (PBXs). How many devices can be used depends on the type of connection.

If you set up an additional FRITZ!Box as a Mesh Repeater, the number of possible devices increases according to the number possible for that particular FRITZ!Box model.

1 DECT devices

The following DECT devices for telephony can be registered with the FRITZ!Box at the same time:

2 IP telephones and IP door intercom systems

You can register up to ten IP telephones (for example FRITZ!App Fon) or IP door intercom systems with the FRITZ!Box.

3 Analog devices

The FRITZ!Box has three sockets for analog devices. You can use two of them, for example for a telephone, fax machine, and/or door intercom system. One "FON 1" socket must remain free (unassigned):

  • "FON 1" and "FON 2" for devices with an RJ11 plug
  • "FON 1" for devices with a TAE plug

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.



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