Protocol converting 9-1-1 emergency messaging center
AssigneeTeleCommunication Systems, Inc.
InventorTodd Poremba
Life of this patent
Estimating the term…
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.
Claims14
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 device into an emergency call during call setup;
- a module adapted to integrate with said B2BUA and allow said B2BUA to query various databases using both standard and proprietary protocols;
- and
- a module to determine a protocol used to reach a proper responder to said emergency call using information contained in a responder database;
- wherein said emergency caller device using a time division multiplex (TDM) trunk is able to access a Public Safety Answering Point (PSAP) using Internet Protocol (IP).
A method of enabling an emergency call from a TDM trunk line to access a PSAP via Internet Protocol (IP), comprising:
- receiving an emergency call over a TDM trunk;
- routing said emergency call to a protocol converting messaging center;
- obtaining a current location of a caller device associated with said emergency call;
- inserting said current location into an Internet Protocol (IP) packet associated with call setup of said emergency call;
- routing said IP packet to an IP-capable Public Safety Answering Point (PSAP);
- and
- determining a protocol used to reach a proper responder to said emergency call using information contained in a responder database.
Apparatus for enabling an emergency call from a TDM trunk line to access a PSAP via Internet Protocol (IP), comprising:
- means for receiving an emergency call over a TDM trunk;
- means for routing said emergency call to a protocol converting messaging center;
- means for obtaining a current location of a caller device associated with said emergency call;
- means for inserting said current location into an Internet Protocol (IP) packet associated with call setup of said emergency call;
- and
- means for routing said IP packet to an IP-capable Public Safety Answering Point (PSAP);
- and
- means for determining a protocol used to reach a proper responder to said emergency call using information contained in a responder database.
Dependencies are inferred from the claim text.