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:
Nov. 19, 1996
Filed:
Aug. 29, 1994
Kazuo Wani, Kanagawa, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A first terminating unit terminates a subscriber line at a first end of the line, the first terminating unit being connected to a public telecommunication network. A second terminating unit terminates the subscriber line at a second end of the line, a terminal equipment being connected to the second terminating unit. A monitoring device monitors at least the subscriber line and the second terminating unit and an alarm generating unit generates an alarm input concerning a condition of at least the subscriber line and the second terminating unit. An alarm controlling device examines a result of the monitoring by the monitoring device, the alarm controlling device controlling, according to a result of the examination, how the alarm input generated by the alarm generating unit is handled. A loop establishing device establishes a loop circuit in the subscriber line, and the monitoring device includes, a loop-current detecting device for detecting an electric current, the electric current flowing through the subscriber line if the loop circuit has been established. A terminal-equipment monitoring device detects whether or not the terminal equipment is being used, the loop establishing device establishing the loop circuit if the terminal-equipment monitoring device detects that the terminal equipment is being used.