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Power cutback configuration of digital line transceivers using public switched telephone net work signaling

A technology for digital subscriber lines and telephone lines, applied in telephone communications, digital transmission systems, electrical components, etc., to solve the problems of reduced filter flexibility, shortened life, and reduced modem efficiency.

Inactive Publication Date: 2009-09-09
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a filter reduces flexibility because the filter provided by the manufacturer is usually designed according to the worst case
Flexibility is provided by allowing the modem user or technician to vary the filter power output, however, this requires the user or technician to access the modem's internal components, which can result in less efficient or shorter modem life

Method used

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  • Power cutback configuration of digital line transceivers using public switched telephone net work signaling
  • Power cutback configuration of digital line transceivers using public switched telephone net work signaling
  • Power cutback configuration of digital line transceivers using public switched telephone net work signaling

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Embodiment Construction

[0011] Power reduction techniques for Digital Subscriber Line (DSL) transceivers are described below. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, structures and devices are shown in block diagram form in order to avoid obscuring the invention.

[0012] References to "one embodiment" or "an embodiment" in the specification indicate that a specific component, structure, or feature described in connection with the embodiment is included in at least one embodiment of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0013] The present invention provides a technique for power reduction o...

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Abstract

The invention provides a technique for power cutback of DSL transceivers (e.g., modems) using public switched telephone network (PSTN) signaling. For example, one or more dual-tone / multiple frequency (DTMF) signals generated by a touch-tone telephone, or other device, can cause a DSL transceiver to reduce the power of upstream data communications. A user of a DSL modem can cause the modem to transmit upstream data while listening to the microphone of a telephone coupled to the same twisted-pair line. Data transmission power can be adjusted by use of one or more buttons on the telephone. The DSL transceiver, in response to one or more predetermined DTMF signals, can adjust transmission power. Thus, the power cutback of the DSL transceiver can be controlled using PSTN signaling.

Description

field of invention [0001] The present invention relates to Digital Subscriber Line (DSL) transceivers. More specifically, the present invention relates to power reduction configuration of DSL transceivers using Public Switched Telephone Network (PSTN) signaling. Background technique [0002] DSL provides users with the ability to use twisted-pair telephone lines for simultaneous voice and data transmission. The frequency range supported by twisted pair is divided into three or more frequency bands for specific purposes. For example, 0-4kHz can be used for voice communication, 30-138kHz can be used for uplink data communication, and above 138kHz can be used for downlink data communication. Upstream communication refers to the flow of data from the DSL modem to the service provider, while downstream communication refers to the flow of data from the service provider to the DSL modem. There are also other DSL standards that use different frequency allocations. [0003] The p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M11/06H04B3/04H04L27/26H04L1/00H04L5/14
CPCH04L5/14H04L1/0001H04B3/04H04L27/2618
Inventor C·C·汉森
Owner INTEL CORP