Protocol Converting 9-1-1 Emergency Messaging Center

• US 20120189002A1
• Filed: 04/02/2012
• Published: 07/26/2012
• Est. Priority Date: 05/30/2008
• Status: Abandoned Application

• Current Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Original Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Inventors: Poremba, Todd
• Application Number:
  US13/437,558
• Publication Number:
  US 20120189002A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 65/1033 Signalling gateways
• CPC Class Codes: H04L 65/1046 Call controllers; Call servers
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 3/42348 Location-based services which utilize the location information of a target
• CPC Class Codes: H04M 7/123 where the packet-switched network is an Internet Protocol Multimedia System-type network
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

Delivery of Next Generation 9-1-1 emergency services to an Internet Protocol (IP) Public Safety Answering Point (PSAP) is enabled using an existing or legacy selective router and Automatic Location Information (ALI) database. Using a protocol converting 9-1-1 messaging center according to the principles of the present invention, existing or legacy selective router equipment can provide Enhanced 9-1-1 (E911) over time division multiplex (TDM) circuits to non-IP capable PSAPs.

Claims

1. A protocol converting messaging center, comprising:

a media gateway;

a back-to-back user agent (B2BUA) that uses Session Internet Protocol (SIP) Body rewrites to insert a current location of an emergency caller into their emergency call during call setup; and

a module adapted to integrate with said B2BUA and allow said B2BUA to query various databases using both standard and proprietary protocols;

wherein an emergency caller using a time division multiplex (TDM) trunk is able to access a Public Safety Answering Point (PSAP) using Internet Protocol (IP).

2-16. -16. (canceled)