Line terminator unit for a subscriber line

Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels

Reexamination Certificate

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Details

C370S488000, C370S497000, C379S093050

Reexamination Certificate

active

09806415

ABSTRACT:
The invention relates to a line terminating device for a subscriber line which transmits and receives broadband signals via a single subscriber line, a broadband signal being composed of a broadband or narrowband audio-frequency data signal and a broadband higher-frequency data signal and the frequency bands of the voice signal and of the data signal essentially not overlapping. The line terminating device according to the invention has a digital frequency separating filter in the digital section of the line terminating device, which is arranged in the digital section of the line terminating device so that the audio-frequency voice signal is separated from the higher-frequency data signal. In particular, the line terminating device is suitable for separating an ISDN or POTS voice signal from an ADSL data signal.

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Japanese Examination Report of co-pending Japanese patent application 2000-573126, dated Jun. 11, 2004 and its English translation.
“Transceiver for ISDN Subscriber Loops”, International Conference on Communications (ICC '89), IEEE, Jun. 1989, pp. 228-232.

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