Mesh routers are only compatible with each other. E.g. AVM with AVM products or TP-Link Deco with other mesh routers of the Deco series. However, the modem used, which is responsible for the Internet signal, does not matter, it can also be from another manufacturer. The Nokia router model will be able to be used with the ABM Mesh. Simply establish a LAN connection to the AVM main mesh router. But the WLAN of the Nokia router must be switched off. It is no longer needed.