- FRITZ!Box 6890 LTE
- FRITZ!Box 6840 LTE
- FRITZ!Box 6810 LTE
- FRITZ!Box 6660 Cable
- FRITZ!Box 6591 Cable
- FRITZ!Box 6490 Cable
- FRITZ!Box 5491
Maximum number of calls over the FRITZ!Box
The maximum number of calls that can be conducted over the FRITZ!Box is limited by the interface (for example DECT, LAN, FON 1). You can conduct four calls over the internet. Below you will find the number of calls possible with each type of interface. To find out how many calls you can conduct with your devices, you must do a little calculating. We have given you a couple of calculation examples.
1 IP telephones
Two connections are established when making calls with an IP telephone that is configured for the "LAN/WAN" port. Therefore, you can conduct a maximum of two calls at the same time with IP telephones, and the number of possible calls is reduced.
If you conduct a call with an IP telephone, two additional calls can be made using the other interfaces.
If two IP telephones are being used to conduct calls, no additional calls can be conducted.
2 DECT devices
You can conduct a maximum of three calls at the same time using cordless telephones that are registered with the FRITZ!Box's DECT base station.
If three cordless telephones and an IP telephone are being used to conduct calls, you cannot conduct an additional call using the other interfaces.
If calls are being made with three cordless telephones and an analog telephone, the integrated answering machine or the fax can accept an additional call. You cannot conduct an additional call with an IP telephone.
3 Analog devices
One call can be conducted with each of the analog devices connected to the socket "FON 1" or "FON 2".
4 ISDN devices
A maximum of two calls can be conducted with ISDN devices connected to the socket "FON S0".
5 Integrated answering machine and fax function
The answering machine and the fax can each accept one call. All other callers hear a busy signal, even if you set up more than one answering machine. You cannot send a fax while receiving a fax, and you cannot receiving a fax while sending one.
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