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:
Oct. 10, 2006
Filed:
Oct. 10, 2001
Bruce M Bina, Plainfield, IL (US);
William P Debruyn, Elk Grove, IL (US);
Steven M Sagerian, Plainfield, IL (US);
Timothy R Housel, Glendale Heights, IL (US);
Bruce M Bina, Plainfield, IL (US);
William P DeBruyn, Elk Grove, IL (US);
Steven M Sagerian, Plainfield, IL (US);
Timothy R Housel, Glendale Heights, IL (US);
Tellabs Operations, Inc., Naperville, IL (US);
Abstract
An echo cancelling system comprises a system controller for directing inbound and outbound PCM signals to one of two echo canceller modules. The system controller receives status information from the echo cancellers and maintains state information pertaining to the active echo canceller, in order to allow seamless switchover from one echo canceller to the other without interrupting service.