Patent ID: 6711247
Filing Date: 2004-03-23
Classification: H04M

Abstract:
A system for handling a call requiring emergency processing to a call answer point and for providing information on location of origination concerning said call via a public network to said call answer point wherein said call includes an extension call which is identified by an internally specified number having local significance to a PBX, comprising:call routing means within said PBX for identifying said call as requiring emergency processing and in response providing a priority routing for said call; translation table means within said PBX for receiving said call having the local significance to the PBX via said priority routing and in response assigning a predetermined designation having universal significance to said public network for indicating said information on location of origination of said call; protocol harmonization means within said PBX for formatting said call for digital transmission to said call answer point, including inserting said predetermined designation in an information portion of said digital transmission; and digital interface means within said PBX for receiving said call properly formatted for said digital transmission and in response transmitting said call via said public network to said call answer point, whereupon said call answer point ascertains the location of origination of said call from said predetermined designation.