Method and system for combining symmetric DSL signals and voice signals
First Claim
1. A system for communicating a telephony voice signal and an SDSL signal on a single combined line where the frequency spectrum of the telephony voice signal during steady state conditions and the frequency spectrum of the SDSL signal may overlap, and where the telephony voice signal may include a plurality of transients during non-steady state conditions the system including:
- a) a first combiner coupled to a telephone switch on a first voice line for communicating the telephony voice signal and to a first SDSL device on a first data line for communicating the SDSL signal, the first combiner including means for communicating both the telephony voice signal and the SDSL signal on the single combined line without significantly corrupting or interrupting the SDSL signal and the telephony voice signal even when transients are present on the telephony voice signal and where the first SDSL device may be disrupted when such transients exist on the first data line; and
b) a second combiner coupled to a telephony device on a second voice line for communicating the telephony voice signal, to a second SDSL device on a second data line for communicating the SDSL signal, and to the first combiner via the single combined line for communicating both the telephone voice signal and the SDSL signal, the second combiner including means for communicating the telephony voice signal and the SDSL signal on the single combined line without significantly corrupting or interrupting the SDSL signal and the telephony voice signal even when transients are present on the telephony voice signal and where the second SDSL device mat be disrupted when such transients exist on the second data line.
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Accused Products
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.
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Citations
25 Claims
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1. A system for communicating a telephony voice signal and an SDSL signal on a single combined line where the frequency spectrum of the telephony voice signal during steady state conditions and the frequency spectrum of the SDSL signal may overlap, and where the telephony voice signal may include a plurality of transients during non-steady state conditions the system including:
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a) a first combiner coupled to a telephone switch on a first voice line for communicating the telephony voice signal and to a first SDSL device on a first data line for communicating the SDSL signal, the first combiner including means for communicating both the telephony voice signal and the SDSL signal on the single combined line without significantly corrupting or interrupting the SDSL signal and the telephony voice signal even when transients are present on the telephony voice signal and where the first SDSL device may be disrupted when such transients exist on the first data line; and
b) a second combiner coupled to a telephony device on a second voice line for communicating the telephony voice signal, to a second SDSL device on a second data line for communicating the SDSL signal, and to the first combiner via the single combined line for communicating both the telephone voice signal and the SDSL signal, the second combiner including means for communicating the telephony voice signal and the SDSL signal on the single combined line without significantly corrupting or interrupting the SDSL signal and the telephony voice signal even when transients are present on the telephony voice signal and where the second SDSL device mat be disrupted when such transients exist on the second data line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16)
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- 11. The system according to claim 11, wherein the high pass filter and the low pass filter are both coupled to the single combined line.
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17. A method for communicating a telephone voice signal and an SDSL signal on a single combined line where the frequency spectrum of the telephony voice signal during steady state conditions and the frequency spectrum of the SDSL signal may overlap, and where the telephony voice signal may include a plurality of transients during non-steady state conditions, the method comprising the steps of:
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a) communicating the telephony voice signal on a first voice line between a telephone switch via the single combined line;
b) communicating the SDSL signal on a first data line between a first SDSL device via the single combined line without significantly corrupting or interrupting the SDSL signal and telephony voice signal even when transients are present on the telephony voice signal and where the first SDSL device may disrupted when said transients are present on the first data line;
c) communicating the telephony voice signal on a second voice line between a telephony device via the single combined line; and
d) communicating the SDSL signal on a second data line between a second SDSL device via the single combined line without significantly corrupting or interrupting the SDSL signal and telephony voice signal even when transients are present on the telephony voice signal and where the second SDSL device may disrupted when said transients are present on the second data line. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification