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. 24, 2005
Filed:
Mar. 30, 2001
Ikuo Aso, Koriyama, JP;
Isao Wada, Koriyama, JP;
Sakae Watanabe, Koriyama, JP;
Hitachi Telecom Technologies, Ltd., Koriyama, JP;
Abstract
A technology is disclosed to enable VP/VC on an ATM network to be backed up by using an ISDN line without presetting any detailed information regarding a backup VP/VC to be set on the ISDN line. An ATM switch Ais provided to establish the ISDN line connecting with an ATM multiplexer Awhen any failure occurs in an ATM transmission path contacting with the ATM multiplexer A. Negotiation is carried out with ATM multiplexer Aby using the established ISDN line so as to decide a channel characteristic of a backup VP/VC to be set on the ISDN line. Then, the ATM switch Aand the ATM multiplexer Acommunicate with each other by using the backup VP/VC having the decided channel characteristic on the ISDN line.