Method and system for combining symmetric DSL signals and...

Details Method and system for combining symmetric DSL signals and... Method and system for combining symmetric DSL signals and...

2008-06-24

2008-06-24

Pham, Chi (Department: 2616)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S480000, C370S485000, C370S493000

Reexamination Certificate

active

07391764

ABSTRACT:
This invention provides a simplified communication system that transmits voice and SDSL signals between customer premise equipment (“CPE”) on a single twisted-pair line. The system preferably includes at least one combiner for combining voice and SDSL signals into a combined voice/SDSL signal that can be transmitted to the CPE on a single twisted pair of wires, preferably a pair of wires currently being used to transmit the voice signal to the CPE. One combiner is ideally located at a common wiring closet of the building where the CPE is located. The combiner is ideally coupled to the existing pair of wires for the voice signal. This eliminates the need to add another set of wires between the common wiring closet and the CPE for the SDSL signal. A second combiner, normally located at or near the CPE separates the combined voice/SDSL signal into the separate voice and SDSL signals for processing by the CPE. The second and first combiners normally also combine and separate, respectively, the voice and SDSL signals transmitted from the CPE.

REFERENCES:
patent: 5757803 (1998-05-01), Russell et al.
patent: 6061392 (2000-05-01), Bremer et al.
patent: 6069899 (2000-05-01), Foley
patent: 6424661 (2002-07-01), Bentley
patent: 6674843 (2004-01-01), Ham
patent: 6760383 (2004-07-01), Darveau
patent: 917392 (1999-05-01), None
patent: 923221 (1999-06-01), None

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