Patent ID: 7164708

Claim:
A line terminating device for reception-path-end separation of an analog first broadband signal, which is transmitted via a telephone subscriber access line, firstly to a low-frequency, narrowband first voice signal and secondly to a broadband first data signal, which is at a higher frequency than the first voice signal, by a reception path and for joining together, at the transmission-path end, firstly a low-frequency, narrowband second voice signal and secondly a broadband second data signal, which is at a higher frequency than the second voice signal, to form an analog second broadband signal which can be transmitted via this telephone subscriber access line in the transmission direction, by a transmission path, (a) wherein the transmission path comprises a1) a digital frequency splitter, which joins together the second voice signal, which is in digital form, and the second data signal, which is in digital form, to form a digital transmission signal, and a2) a digital-to-analog converter being preceded by the digital frequency splitter, which converts the digital transmission signal to the analog second broadband signal to be transmitted in the transmission direction, (b) wherein the reception path, which carries the first analog broadband signal, b1) is subdivided into an analog path for voice signals and a path, which is separate from this, for data signals, b2) wherein an analog-to-digital converter is provided at the end of each of these two paths for conversion to respectively corresponding digital signals, and b3) wherein a balance filter, which is driven by the second analog broadband signal, is arranged between the transmission path after the output of the digital-to-analog converter and the subtraction input of a subtraction element, which is connected upstream of the analog-to-digital converter in the separate analog data signal path of the reception path.