Patent ID: 7764944

Claim:
A method of communication with at least one wireless unit originating an emergency call, the method comprising: receiving at least one routing tag associated with the at least one wireless unit from which the emergency call is received; generating a unique call back number in response to receiving the at least one routing tag, the unique call back number being associated with at least one mobile switching center (MSC) serving the at least one wireless unit, the unique call back number including a string of numbers corresponding with a local public safety number associated with the at least one MSC and a string of numbers assigned to the unique call back number upon receiving the at least one routing tag; storing the unique call back number in at least one emergency call register directly accessible by a local emergency center such that there is no intervening network infrastructure element between the at least one emergency call register and the local emergency center; and transmitting the unique call back number to uniquely identify the at least one wireless unit in response to the step of receiving at least one routing tag.