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:
Jun. 18, 2002
Filed:
Mar. 17, 1998
Kazuyuki Ohmori, Kawasaki, JP;
Shigeru Murata, Kawasaki, JP;
Takamitsu Shirai, Kawasaki, JP;
Takashi Hashimoto, Kawasaki, JP;
Akiko Kobayashi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
To prevent erroneous recognitions of line failures by a network apparatus, an alarm notifying controller region is provided independent from an actual data region in a connection between a line interface of the network apparatus and a terminal interface unit (line set). When a line is set within the network apparatus, an alarm notification path from the line interface to the line set is simultaneously set. When a line failure is detected by the line interface, information is notified the alarm notification path to all of the line sets connected to this line interface. In the line sets, a signal state of an interface is changed with respect to each sort of terminal interfaces, so that the line failure is notified to the terminal.