Protocol Converting 9-1-1 Emergency Messaging Center

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.

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).   
     
     
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