| 摘要 |
<p>A physical layer router comprises a plurality of subscriber ports, a of dsp pool ports, a switch, isolation circuitry, a tone detector, and a control logic. The control logic comprises a micro processor interface. The physical layer router couples at least some of the plurality of subscriber ports to at least some of the dsp pool ports. The physical layer router connects every subscriber port not coupled to a dsp pool port are coupled to a snoop bus. Tones are detected (74) on the snoop bus (72). The tones comprise request tones from customer premise equipment devices connected to the plurality of subscriber ports. Exactly one subscriber port 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.</p> |
