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Knowledge document #124
FRITZ!Box 6670 Cable
This support document is available for the following products:
- FRITZ!Box 7690
- FRITZ!Box 7590 AX
- FRITZ!Box 7590
- FRITZ!Box 7583 VDSL
- FRITZ!Box 7583
- FRITZ!Box 7582
- FRITZ!Box 7581
- FRITZ!Box 7560
- FRITZ!Box 7530 AX
- FRITZ!Box 7530
- FRITZ!Box 7520
- FRITZ!Box 7510
- FRITZ!Box 7490
- FRITZ!Box 7430
- FRITZ!Box 7390
- FRITZ!Box 7360
- FRITZ!Box 6890 LTE
- FRITZ!Box 6850 5G
- FRITZ!Box 6850 LTE
- FRITZ!Box 6840 LTE
Callers do not hear busy signal when a call is already being conducted via FRITZ!Box
Callers hear a ringing tone instead of a busy signal if a telephone call is already being conducted over the FRITZ!Box. The caller therefore assumes that the line is free.
Simply proceed as described below. After each measure, check whether the problem is solved.
1 Configuring the FRITZ!Box
- Click "Telephony" in the FRITZ!Box user interface.
- Click "Telephony Devices" in the "Telephony" menu.
- Click the (Edit) button for the respective telephone.
- Click on the "Telephony Device Features" tab.
- Enable the option "Call rejection on busy (busy on busy)".
- Disable the option "Call waiting".
- Click "Apply" to save the settings.
2 Function not supported by IP telephones and telephones connected to the Mesh Repeater
The "Busy on busy" function is not supported when making calls with IP telephones (for example FRITZ!App Fon) or telephones connected to a Mesh Repeater. If you are using an IP telephone or a telephone connected to a Mesh Repeater to make a call, it is therefore not possible to give the caller a busy signal.