I joyfully unpacked and connected the Fritz! Box. It was connected to an all-IP 6000 port and was not working. Then I sat down on the net inquires what may be that, it is recommended in the unit on vorrige DSL version and the immunity to change, that everything was not and she found no DSL. Now more looked on the net and found with entsetzem that they have installed a cheap modem that does not get along with the Infineon junctions, thereby a No Go for a connection. Therefore I 1 star and 5 star for amazon for obliging withdrawal and refund, so I can not comment as "good" it.