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Knowledge document #3598
FRITZ!Box 5490
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
DECT connection drops frequently
The DECT connection between a cordless telephone and the FRITZ!Box is frequently lost. The message "Search for base" is shown on the telephone's display.
Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.
Simply proceed as described below. After each measure, check whether the problem is solved.
1 Installing the latest FRITZ!OS for the FRITZ!Box
- Install the latest FRITZ!OS on the FRITZ!Box.
2 Installing the latest software for your telephone
The following steps are only necessary if you are using a FRITZ!Fon:
- Install the latest software on the telephone.
3 Recharging the telephone battery
- Fully charge the telephone battery. Leave the telephone in the charging station for at least 12 hours.
4 Configuring the FRITZ!Box
Disabling "Reduce DECT field strength"
- Click "Telephony" in the FRITZ!Box user interface.
- Click "DECT" in the "Telephony" menu.
- Disable the option "Reduce DECT field strength" in the section "Radio Field Strength".
- Click "Apply" to save the settings.
Disabling "DECT Eco"
- Click "Telephony" in the FRITZ!Box user interface.
- Click "DECT" in the "Telephony" menu.
- Disable the option "DECT Eco" in the section "Radio Field Strength".
- Click "Apply" to save the settings.
5 Turning off other base stations
- For testing purposes, turn off other base stations in the vicinity of the FRITZ!Box.
- If the problem no longer occurs then, switch off the other base station or place the base station farther away from the FRITZ!Box.
6 Removing USB 3.0 devices from the FRITZ!Box
- For testing purposes, remove all of the USB 3.0 devices from the FRITZ!Box's USB ports.
- If the problem no longer occurs then, a USB device was interfering with the radio connection. Eliminate the interference caused by the USB device.