Physical layer router system and method
US6839343B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/6478
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A physical layer router comprises a plurality of subscriber ports, a plurality of dsp pool ports, a switch, isolation circuitry, a tone detector, and control logic. The control logic comprises a microprocessor interface. The physical layer router couples at least some of the plurality of subscriber ports to at least some of the plurality of dsp pool pools. The physical layer router connects every subscriber port not coupled to a dsp pool port to a snoop bus. Tones are detected on the snoop bus. The tones comprise request tones from customer premise equipment devices connected to the plurality of subscriber ports. Exactly one subscriber port is isolated, whereby exactly one customer premise equipment device generating the request tone is isolated. A dsp pool port is coupled to the isolated subscriber port. A fast line acquisition method finds one subscriber port of the plurality of subscriber ports receiving the request tones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.