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:
Aug. 18, 2009
Filed:
Feb. 14, 2005
Jianming Xu, Plano, TX (US);
Charles Marvin Berteau, Plano, TX (US);
Ghassan Naim, Garland, TX (US);
Seshagiri Rao Madhavapeddy, Richardson, TX (US);
Pardeep Kohli, Plano, TX (US);
Shiang Yueng Feng, Colleyville, TX (US);
Jianming Xu, Plano, TX (US);
Charles Marvin Berteau, Plano, TX (US);
Ghassan Naim, Garland, TX (US);
Seshagiri Rao Madhavapeddy, Richardson, TX (US);
Pardeep Kohli, Plano, TX (US);
Shiang Yueng Feng, Colleyville, TX (US);
Alcatel-Lucent USA Inc., Murray Hill, NJ (US);
Abstract
Geographical redundancy and an efficient switchover process to redundant equipment () is achieved by separating active main equipment () and standby redundant equipment in different geographical locations so that failures can be avoided in the event of a natural disaster or other event that affects an entire building or region. In addition, partial switchover can be performed for components or functions that become inoperative to corresponding redundant components in the standby equipment. To provide further redundancy and prevent unneeded switchovers, status or heartbeat messages are transmitted between the active main equipment and standby redundant equipment over two different networks.