Peering network for parameter-based routing of special number calls

• US 8,824,454 B2
• Filed: 07/14/2006
• Issued: 09/02/2014
• Est. Priority Date: 10/24/2005
• Status: Active Grant

• Current Assignee: Intrado Life & Safety Incorporated
• Original Assignee: West Corporation
• Inventors: Patel, Ashish, Meer, Stephen Marc, Deweese, Michael, Smith, Carleton Anthony
• Primary Examiner(s): Nawaz, Asad
• Assistant Examiner(s): HAMEL, JOEL A
• Application Number:
  US11/457,600
• Publication Number:
  US 20070115941A1
• Time in Patent Office: 2,972 Days
• Field of Search: 370352-356, 379/37, 379/45
• US Class Current: 370/352
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/401 wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
• CPC Class Codes: H04L 67/53 using third party service providers
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/0063 where the network is a peer-to-peer network

Abstract

A system and method that routes special number calls from communications devices, including VoIP communications devices, to an answering point that is selected based on a parameter. A peering network effects parameter-based routing of calls to a pre-assigned answering point, wherein the voice path and the signaling paths are set up simultaneously. A gateway in the peering network is connected to the service provider switch and receives special number calls. The gateway queries a pre-provisioned parameter server that determines call routing information for the particular communications device. The gateway then selects another gateway, or, optionally, a selective router access provider network, based on the routing information and delivers the call thereto. The other gateway or selective router access provider network is connected to a router in the destination network and delivers the call and the call parameters to the router.

Claims

1. A peering network for routing a special number call from a communications device connected to a first communications network to an answering point connected to a second communications network based on a pre-provisioned parameter regarding said communication device, said pre-provisioned parameter comprising one of a plurality of parameters regarding said communication device, said peering network comprising:

a first gateway coupled with a plurality of second gateways and coupled with a parameter server;

said first gateway configured to receive a voice path and one or more of said plurality of parameters regarding said communication device from said first communications network;

said parameter server configured to deliver routing instructions to said first gateway responsive to said parameter server determining that said first gateway delivered said pre-provisioned parameter;

said first gateway further configured to select one of said plurality of second gateways responsive to said parameter server determining that said first gateway delivered said pre-provisioned parameter and to deliver the voice path and a signaling path including the routing instructions to the selected second gateway; and

said second gateway configured to connect said voice path and said signaling path to said second communications network;

said voice path and said signaling path proceeding from said first gateway to said second communications network via a plurality of network elements substantially simultaneously;

at least one of said first gateway and said selected second gateway generating a message to a caller at substantially the same time as one of said voice path and said signaling path is received by at least one selected network element of said plurality of network elements;

said message conveying that said special number call is being connected with said at least one selected network element;

wherein said pre-provisioned parameter comprises a location of said communications device; and

wherein said special number call is connected with said at least one selected network element as if it were a special number call that originated in said second communications network; and

wherein said first gateway comprises a session border controller.

2. A peering network in accordance with claim 1 wherein said communications device comprises a VoIP communications device and said first network comprises a VoIP service provider network.

3. A peering network in accordance with claim 1 wherein said second network comprises the public switched telephone network.

4. A peering network in accordance with claim 1 wherein said voice path is delivered via a time division multiplexed (TDM) link from said first network to said first gateway.

5. A peering network in accordance with claim 1 wherein said voice path is delivered via an Internet Protocol (IP) link from said first network to said first gateway.

6. A peering network in accordance with claim 1 wherein said call is delivered via a primary rate interface (PRI) link from said first network to said first gateway.

7. A peering network in accordance with claim 1 wherein said voice path and said signaling path are delivered from said first gateway to said selected second gateway via an IP link.

8. A peering network in accordance with claim 1 wherein said voice path and said signaling path are delivered from said first gateway to said selected second gateway via a TDM link.

9. A peering network in accordance with claim 1 wherein said voice path and said signaling path are delivered from said selected second gateway to said second communications network via a TDM link.

10. A peering network in accordance with claim 1 wherein said voice path and said signaling path are delivered from said selected second gateway to said second communications network via an IP link.

11. A peering network in accordance with claim 1 wherein said first network further comprises a service provider switch and wherein said service provider switch is configured to connect said voice path of said special number call directly to said first gateway.

12. A peering network in accordance with claim 1 wherein said special number call comprises an emergency services call.

13. A peering network in accordance with claim 12 wherein said second gateway is configured to deliver said voice path and said signaling path to a selective router.

14. A peering network for routing a special number call from a communications device connected to a first communications network to an answering point connected to a second communications network based on a pre-provisioned parameter regarding said communication device, said pre-provisioned parameter comprising one of plurality of parameters regarding said communication device, said peering network comprising:

a first gateway coupled with a session border controller, a plurality of second gateways and a parameter server;

said session border controller configured to receive a voice path and one or more of said plurality of parameters regarding said communication device said parameter from said first communications network;

said parameter server configured to deliver routing instructions to said session border controller responsive to said parameter server determining that said session border controller delivered said pre-provisioned parameter;

said session border controller further configured to deliver the voice path and a signaling path including the routing instructions to said first gateway;

said first gateway configured to select one of said plurality of second gateways and to deliver the voice path and said signaling path to the selected second gateway responsive to said session border controller; and

said second gateway configured to connect said voice path and said signaling path to said second communications network;

said voice path and said signaling path proceeding from said session border controller to said second communications network via a plurality of network elements substantially simultaneously;

at least one of said first gateway, said session border controller and said selected second gateway generating a message to a caller at substantially the same time as one of said voice path and said signaling path is received by at least one selected network element of said plurality of network elements;

said message conveying that said special number call is being connected with said at least one selected network element

wherein said pre-provisioned parameter comprises a location of said communications device; and

wherein said special number call is connected with said at least one selected network element as if it were a special number call originating in said second communications network.

15. A peering network in accordance with claim 14 wherein said communications device comprises a VoIP communications device and said first network comprises a VoIP service provider network.

16. A peering network in accordance with claim 14 wherein said second network comprises the public switched telephone network.

17. A peering network in accordance with claim 14 wherein said call is delivered via an IP link from said first network to said session border controller.

18. A peering network in accordance with claim 14 wherein said voice path and said signaling path are delivered from said session border controller to said first gateway and from said first gateway to said selected second gateway via an IP link.

19. A peering network in accordance with claim 14 wherein said voice path and said signaling path are delivered from said selected second gateway to said second communications network via a TDM link.

20. A peering network in accordance with claim 14 wherein said voice path and said signaling path are delivered from said selected second gateway to said second communications network via an IP link.

21. A peering network in accordance with claim 14 wherein said first network further comprises a service provider switch and wherein said service provider switch is configured to connect said voice path of said special number call directly to said first gateway.

22. A peering network in accordance with claim 14 wherein said special number call comprises an emergency services call.

23. A peering network in accordance with claim 22 wherein said second gateway is configured to deliver said voice path and said signaling path to a selective router.