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:
Jul. 13, 2004
Filed:
Dec. 30, 1999
Applicant:
Inventors:
Shuichi Nakagawa, Kanagawa, JP;
Hiroyuki Asano, Kanagawa, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/108 ;
U.S. Cl.
CPC ...
G01R 3/108 ;
Abstract
In an access network system for performing a maintenance management of an access line, a processor stores an allocation status of a bearer channel to be managed, and a system manager determines an availability status of the access line based on the allocation status. Also, the processor determines the availability status based on the allocation status and loop open/close information of a PSTN/ISDN user line. Furthermore, the system manager activates a test portion based on the availability status.