Distribution device in a subscriber connection area

A distribution device in the subscriber access area, comprising two changeover devices, two switching matrices, a DSLAM adapted to be connected only to a data service and having associated splitter modules, and at least one controller, in which the first changeover device comprises m inputs, m first outputs and m second outputs, with a first and a second output having one associated changeover element by means of which an associated input can be selectively connected to the first or to the second output, and wherein the associated input is adapted to be connected only to a POTS service,

• the second changeover device comprises m first inputs, m second inputs and m outputs, with a first input and a second input having one associated changeover element by means of which an associated output can be selectively connected to the first or to the second input, the first switching matrix has m inputs and n outputs, and
• the second switching matrix has n inputs and m outputs,
• where n<m,
• the inputs of the first changeover device can be connected to a switching center,
• the first outputs of the first changeover device are connected directly to the first inputs of the second changeover device, and the second outputs of the first changeover device are connected only to the inputs of the first switching matrix,
• the second inputs of the second changeover device are connected only to the outputs of the second switching matrix, and the outputs of the second changeover device are connected directly to subscriber lines,
• the splitter modules have POTS connections, data connections and POTS/data connections, with the outputs of the first switching matrix being connected to the POTS connections, the data connections being connected to the DSLAM, and the POTS/data connections being connected to the inputs of the second switching matrix, and
• the controller switches the first and second changeover devices and switching matrices between a basic state and an enhanced state by sending a signal to both of the first changeover device and the second changeover device,
• wherein when in the basic state, the associated input of the first changeover device is directly connected to the first output of the first changeover device via the one associated changeover element of the first changeover device, and where the first input of the second changeover device is directly connected to the associated output of the second changeover device via the one associated changeover element of the second changeover device, such that a subscriber receives only the POTS service in the basic state, and
• wherein when in the enhanced state, the associated input of the first changeover device is directly connected to the second output of the first changeover device via the one associated changeover element of the first changeover device, and where the second output of the first changeover device is connected to the second input of the second changeover device via the first switching matrix, at least one of the splitter modules, and the second switching matrix, and where the second input of the second changeover device is directly connected to the associated output of the second changeover device via the one associated changeover element of the second changeover device, such that the subscriber receives a POTS/data service in the enhanced state, wherein a POTS component of the POTS/data service is not routed from the first output of the first changeover device to the first input of the second changeover device.