I use the printer for four weeks, two computers that are connected via LAN cable to a Fritz box. As for printing, scanning and copying, I am very satisfied with the device. Also sending and receiving faxes works flawlessly. But there is a problem when the unit is connected to an NFN-socket and when a phone is still to be operated at the same NFN socket: The printer (connected to the N-connector) does not rub the phone signal through - the phone stays . dead now located on the printer next to the fax jack yet another RJ11 socket to which you can connect a telephone line with RJ11 connectors; then should a phone call can be looped through. (This connection will be described in the operation manual) unfortunately this does not work well! Because to be operated to this jack phone is a cordless phone DECT standard and my Fritz box can work as a DECT base station, I can operate it luckily on.