Cannot register FRITZ!DECT 500Registration of the LED light FRITZ!DECT 500 to the FRITZ!Box fails. The DECT connection is not established when you push the DECT button on the FRITZ!Box. The LED light flashes red several times and then glows red.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....
> https://pl.avm.de/serwis/baza-wiedzy/dok/FRITZ-Box-7590/3542_Cannot-register-FRITZ-DECT-500/
Loading the FRITZ!Box factory settingsLoad the factory settings to delete all of the individual settings you have made in the FRITZ!Box. This makes sense if you are going to use the FRITZ!Box at a different location or are planning to pass the FRITZ!Box on to another user, for example. In addition, this deletes incorrect settings that prevent the FRITZ!Box from working correctly. You can either...
> https://pl.avm.de/serwis/baza-wiedzy/dok/FRITZ-Box-7590/3_Loading-the-FRITZ-Box-factory-settings/