E911 Call Blocking for Non-Initialized Wireless Telephones

Abstract

Calls from a phone identified as being a source of harassing or other undesirable phone calls are blocked at a mobile positioning center (MPC). Upon request by the PSAP, a call record detail can be obtained from the MPC revealing a simulated “callback phone number”. The MPC then intercepts all future incoming calls from that simulated callback phone number and routes them to a recording that advises the harasser that the phone has been identified as a harasser and is now blocked. The recording can also advise the caller how to restore service. In a preferred embodiment, the MPC sets a timer to automatically restore service after a designated length of time.

1 . A method of blocking an undesirable call from being routed to an intended recipient, comprising:
 associating a simulated callback phone number with said undesirable call;   querying a mobile positioning center (MPC) for routing instructions for said undesirable call;   comparing said simulated callback phone number with a known list of callback phone numbers to be blocked; and   if a match is made by said comparing, blocking routing of said undesirable call to said intended recipient at said mobile positioning center (MPC).   
     
     
         2 - 18 . (canceled)