Systems and methods for third party emergency call termination

Abstract

Various systems and methods for servicing emergency calls are disclosed. One such method includes providing a location database that includes physical location information about a communication device. This location information can be accessed either directly or indirectly by an emergency service answering system, while concealing the information from a network responsible for terminating the call.

What is claimed is: 
     
         1 . A method comprising:
 receiving messaging information associated with a call from a terminal adapter and determining whether the call is an emergency call, wherein the messaging information includes a telephone number associated with the terminal adapter;   if the call is determined to be an emergency call, requesting contact information for a Public Service Answering Point (PSAP) responsible for servicing emergency calls from a geographic area where the terminal adapter is located;   receiving the PSAP contact information and a token associated with the terminal adapter;   replacing the telephone number in the messaging information with the token to render modified messaging information; and   routing the modified messaging information to the PSAP using at least the PSAP contact information.   
     
     
         2 . A method as recited in  claim 1 , wherein the PSAP contact information comprises an Emergency Services Routing Number. 
     
     
         3 . A method as recited in  claim 1 , wherein the token comprises an Emergency Services Request Key. 
     
     
         4 . A method as recited in  claim 1 , further comprising:
 at the PSAP,
 receiving the modified messaging information; and 
 using the modified messaging information to request from an Automatic Location Identification database a current location of the terminal adapter and the telephone number of the terminal adapter.