Arrangement for sharing a single signaling point code...

Details Arrangement for sharing a single signaling point code... Arrangement for sharing a single signaling point code...

2007-12-25

2007-12-25

Deane, Jr., William J. (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S225000

Reexamination Certificate

active

10365411

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.

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