Physical layer router system and method

Details Physical layer router system and method Physical layer router system and method

2005-01-04

2005-01-04

Ho, Duc (Department: 2665)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S401000, C370S465000, C370S537000

Reexamination Certificate

active

06839343

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.

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