Abstract: In an attachment element for fixing an object to a wall, wherein a shaft of the attachment element can be introduced into a hole in the wall and can be fixed to the inner surface of the hole, it is provided that the shaft has a substantially plate-like design and is formed, towards the interior of the hole, with two projections oriented oppositely to one another which project from the shaft counter to the direction of insertion of the shaft into the hole, are prestressed in the direction of the inner surface of the hole and of which the projecting lengths, prior to insertion into the hole, exceed a clear width of the inner surface of the hole, allowing a simple and secure fixing, in particular, by wedging the projections in the hole.

Abstract: In a method and apparatus for data transmission and voice signal transmission on a subscriber line, in terminal devices located at least on a network side of the subscriber line, only those parts which evaluate a criterion indicating the beginning of the data transmission are switched into active mode outside the context of data transmission.

Abstract: For measuring the operating properties of a subscriber line module (1) for high bit rate data transmission, a test signal is generated within the module and supplied into a test line (6) with a defined line termination (7) who line or terminating properties are known. The echo signal arising in the test line (6) as a result of the test signal is in turn detected in the subscriber line module (1) and interpreted for evaluating the operating properties.