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:
Dec. 25, 2007
Filed:
Feb. 13, 2003
Thomas Joseph Bova, Arlington, VA (US);
Kenneth Alfred Morneault, McLean, VA (US);
Spyridon Dimitrios Tsitsonis, Leesburg, VA (US);
William Spencer Smart, Ii, Wake Forest, NC (US);
Larry Earl Peterson, Apex, NC (US);
Anant Rajabhau Ghotkar, Herndon, VA (US);
Thomas Joseph Bova, Arlington, VA (US);
Kenneth Alfred Morneault, McLean, VA (US);
Spyridon Dimitrios Tsitsonis, Leesburg, VA (US);
William Spencer Smart, II, Wake Forest, NC (US);
Larry Earl Peterson, Apex, NC (US);
Anant Rajabhau Ghotkar, Herndon, VA (US);
Cisco Technologiy, Inc., San Jose, CA (US);
Abstract
A Voice over IP network having multiple signaling message transfer nodes (e.g., call agents, signaling gateways), communicate with switched circuit network nodes using a single point code. A signaling gateway, upon receiving an SS7 signaling message specifying a destination point code corresponding to its provisioned point code and carrying a signaling application protocol message, selects a destination call agent based on the originating point code in the SS7 signaling message and independent of the destination point code. The signaling gateway selectively outputs to the selected destination call agent an IP-based message carrying the signaling application protocol message according to a prescribed IP-based signaling message transport protocol, based on a determined availability of the selected destination call agent. The signaling gateway uses the User Part Unavailable message to inform the originating PSTN switch that the selected destination call agent is unavailable.