Systems and methods for processing emergency calls through a public switched telephone network

Abstract

A method of making an emergency call that includes dialing a three-digit emergency number on a communication device, translating the three-digit emergency number into an emergency service number at an interface, where the interface uses the emergency service number to initiate the emergency call with a public switched telephone network, and sending the emergency call in the public switched telephone network to an emergency selective router, where the emergency selective router routes the emergency call to a public safety answering point. Also, a system to make an emergency call that includes a communication device having an input to dial a three-digit emergency number, an interface to translate the three-digit emergency number into an emergency service number used to initiate an emergency call with a public switched telephone network, and an emergency selective router that receives the emergency call and routes it to a public safety answering point.

Dependencies are inferred from the claim text.