Cisco Technology, Inc.

Scott M Simon

Hugh Barrass

Bruce B Weller

A system and method for MAC-PHY rate matching combines carrier sense signal and rate matching techniques to implement close loop rate matching. An adapter entity responds to each carrier sense deferral to throttle the MAC until rate matching is achieved.

Closed loop method and apparatus for throttling the transmit rate of an ethernet media access controller

A method for measuring crosstalk in a data service system includes transmitting a signal using a first device. The first device is coupled to a solid state crossbar switch. The method includes coupling the first device using the crossbar switch to a first data line coupled to the crossbar switch such that the signal communicates over the first data line. The first data line is capable of being coupled to a customer premise equipment (CPE) device. The method includes coupling a first number of second devices coupled to the crossbar switch to a second number of data lines coupled to the crossbar switch using the crossbar switch. Each second number of data lines is capable of being coupled to a CPE device. The method also includes monitoring the second number of data lines for near end crosstalk (NEXT) generated by the signal communicating over the first data line using the first number of second devices. The method may also include monitoring at least one of a third number of data lines for far end crosstalk (FEXT) generated by a signal communicating over the third number of data lines. The third number of data lines comprises the first data line and the second number of data lines.

Method and system for measuring crosstalk utilizing a crossbar switch

A method and apparatus for eliminating near-end crosstalk in a communication network are disclosed. Crosstalk generated by communication occurring on a second line is detected on a first line and the phase of the crosstalk detected on the first line is determined. A first signal is communicated on the first line in response to the phase.

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Mountain View, CA, United States of America

Scott M Simon