Have long to wait for delivery. The positives first: The pure repeater function is in order, the range is improved greatly. The first installation went smoothly. In another socket exchange - overlaid with a firmware update of the Box - required the repeater application repeatedly executing a procedure from the support area with multiple boxing restart. Was at first logon the configured on the box DECT Eco (ie switching off the radio power at standby) in the user interface and set, but not more effective, so after the firmware update of the box and also the repeater was the range DECT Eco in the surface completely grayed out and reset. Only the Nachsuche in the support pages provides the information that DECT Eco when using the repeater is not possible. In the product descriptions you read on the other hand only: "Along with a FRITZ! Box with DECT base and a DECT cordless telephone, such as the FRITZ! Fon, opens up the repeater new options in the home network!." Likewise, we learn only in the support area of the repeater it is to be disconnected from the mains so when reinserting performs Firwareupdate. Whatever he did, but this is very irritating without previous info! Conclusion: I think it's rubbish of AVM that is not fully informed in the product description, an important functional feature is missing and the handling (AVM typical?) Is not without. In general I am satisfied with AVM products and support but here's even chosen place to improve.