Patent ID: 7496182
Filing Date: 2009-02-24
Classification: H04L,H04M

Abstract:
1. A method for interfacing internet protocol (IP)-enabled emergency calls to a public 9-1-1 system comprising: receiving an emergency call originating from internet protocol (IP) telephony to a data network via a routing device having a routing device identifier; determining whether the emergency call originated from a first location associated with the IP telephony; determining, when the emergency call originated from the first location, whether at least one of an automatic number identification (ANI) or automatic location information (ALI) is resolvable for the IP telephony; matching the routing device identifier, when the emergency call did not originate from the first location or neither the ANI nor the ALI is resolvable, to stored profile information associated with the routing device; and transmitting the emergency call to a public service answering point (PSAP) based on the matched profile information or the at least one of the ANI or the ALI.