Residential power cutback for splitterless DSL operation
US6563864B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital subscriber line modem (30) capable of operating with multiple transmission line profiles depending on the current transmission line characteristics of a wire line pair (20) includes an interface (212, 292) to the wire line pair (20) and a signal converter (214, 290) with a terminal coupled to the interface. An on/off-hook detector(300) drives an impedance analyzer function (304) that is able to measure transmission line parameters based on the current line characteristics of the wire line pair (20). A control logic block (310) performs the actions required to adapt to a new line conditions of the wire line pair (20) and rapidly adapt to the new on/off hook condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.