The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2006
Filed:
Apr. 14, 2003
Applicants:
Hugh Barrass, Milpitas, CA (US);
Brian A. Arnold, Santa Rosa, CA (US);
Inventors:
Hugh Barrass, Milpitas, CA (US);
Brian A. Arnold, Santa Rosa, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 15/00 (2006.01); H04J 1/12 (2006.01); H04L 12/63 (2006.01); H04L 12/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A data communication system is provided that comprises a head-end switching system which comprises a plurality of communication ports. A port controller causes the ports to sequentially issue inquiry signals to network termination points. This sequential processing of inquiry signals prevents the formation of phantom links that may occur if physical conductors which are susceptible to crosstalk interference with connected conductors erroneously convey a response signal back to an unattached port within the head-in switching system.