FRITZ!Box 7530 Service - Knowledge Base

FRITZ!Box 7530 Service

Maximum number of calls over the FRITZ!Box

The interface (for example DECT, LAN, FON 1) limits the maximum number of calls that can be conducted over the FRITZ!Box. You can conduct up to six 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 will have to calculate a little. 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 three calls at the same time with IP telephones, and the number of possible calls is reduced.

Example:
If two IP telephones are being used to conduct calls, two additional calls can be made using the other interfaces.
If three IP telephones are being used to conduct calls, no additional calls can be conducted using the other interfaces.

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.

Example:
If calls are being conducted with two cordless telephones and an IP telephone, two additional calls can be made using the other interfaces.
If calls are being conducted with three cordless telephones and an IP telephone, an additional call can be conducted with an analog telephone, or 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

You can conduct one call with an analog device connected to the "FON" port.

4 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.