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:
May. 26, 1998
Filed:
Mar. 17, 1995
Fumihiro Ikawa, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A line switching control system provided in each of stations connected by a first type line and a second type line in a synchronous communication network system in which frame data including an overhead is transmitted through the first type line or the second type line between the stations. The line switching control system includes a protection switching unit for switching the first type line used as a work line to the second type line defined as a protection line in a predetermined switching mode when a failure occurs in the first type line, and a unit, when the failure first type line is recovered, for transmitting line recovery mode information representing whether a line recovery mode is a REV mode in which the recovered first type line is reverted as the work line or a NON-REV mode in which the second type line is continuously used as a new work line and the recovered first type line is defined as a new protection line, the line recovery mode information being included in the overhead of the frame data.