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. 29, 1996
Filed:
Mar. 31, 1995
Applicant:
Inventors:
Mark Kaprielian, Framingham, MA (US);
Karen Brim, Leominster, MA (US);
Lewis Kenyon, Nashua, NH (US);
Assignee:
Telco Systems, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
370 16 ; 395181 ;
Abstract
The invention performs very fast switching between a main module and a standby module in the event of module failure. A single control line has different logic level signals applied thereto in the event of a main module failure and a standby module failure, with the signals on the control line being utilized to efficiently switch the on-line status of the modules to a desired state.