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:
Aug. 31, 2010
Filed:
Dec. 18, 2001
Robert A. Marshall, Georgetown, TX (US);
James R. Sisk, Austin, TX (US);
Robert A. Marshall, Georgetown, TX (US);
James R. Sisk, Austin, TX (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
According to one embodiment of the invention, a method for self-testing a portion of a line card having a digital signal processor for manipulating data received by the line card, and a transmit channel and a receive channel coupled to a combined transmit and receive channel includes transmitting a test signal through at least a portion of the transmit channel toward the combined channel and detecting, by the digital signal processor any resulting signal in the receive channel to determine whether any components in the transmit channel, receive channel or combined channel are malfunctioning.