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. 20, 2012
Filed:
Jun. 07, 2010
Vadim Eydelman, Bellevue, WA (US);
Sankaran Narayanan, Redmond, WA (US);
Dhigha D. Sekaran, Redmond, WA (US);
Mahendra D. Sekaran, Sammamish, WA (US);
Bimal K. Mehta, Sammamish, WA (US);
Amey Parandekar, Kirkland, WA (US);
Vadim Eydelman, Bellevue, WA (US);
Sankaran Narayanan, Redmond, WA (US);
Dhigha D. Sekaran, Redmond, WA (US);
Mahendra D. Sekaran, Sammamish, WA (US);
Bimal K. Mehta, Sammamish, WA (US);
Amey Parandekar, Kirkland, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Enhanced communication systems with various resiliency and survivability aspects are provided. Data center, cluster, network, and load balancer survivability are provided for seamless communication experience in case of data center, cluster, discovery infrastructure, or hardware load balancer failures. Call, data, and authentication survivability are provided through dynamic re-routing over alternative networks, continuous data replication, and alternative authentication mechanisms. Seamless failover is ensured through use of identical signaling protocols and data carried by protocols between primary and backup clusters. Voicemail resiliency is achieved by re-routing calls directed to voicemail over alternative paths such as PSTN connections.