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. 15, 2011
Filed:
Aug. 30, 2007
Applicants:
Michael a Skubisz, Durham, NH (US);
Edward F Holmes, Durham, NH (US);
Brian St. Pierre, Acworth, NH (US);
David L Cullerot, Nashua, NH (US);
Inventors:
Michael A Skubisz, Durham, NH (US);
Edward F Holmes, Durham, NH (US);
Brian St. Pierre, Acworth, NH (US);
David L Cullerot, Nashua, NH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Method and apparatus for ad hoc cooperative routing in an IP network. Included is an emergency stand alone (ESA) system that provides a bypass to a failed TDM switch for multiple communication devices in communication with one or more TDM switches. One or more internet protocol media gateways communicate a multicast signal upon the failure of a switch. The multicast initiates Voice over IP communication between endpoints, bypassing the failed switch.