I have constant outages with UPC and unfortunately no DSL alternatives. Therefore, I would like to use the 6890 as an LTE fallback, i.e. reserve. Question: Does the Fritzbox recognise when the internet link via LAN1 fails? Attention, the LAN signal unfortunately remains on with UPC hang-ups, only the stream then remains at zero. With DSL, the detection is clear, but due to the fact that the DSL LINK goes X-OFF, it is different.