Processing of emergency calls in wireless communications system with fraud protection
First Claim
1. A method for processing calls in a wireless communications system, the method comprising the steps of:
- detecting a call placed from a mobile station in said system to a multi-digit number dialed by a user of said mobile station;
determining whether said call is indicated to be fraudulent;
if said call is indicated to be fraudulent, determining whether said dialed number is a predefined multi-digit emergency number by performing a mini B-number analysis that sequentially compares one or more of the digits of said dialed number to the corresponding digits of said emergency number;
if said call is indicated not to be fraudulent or if said dialed number is determined to be an emergency number, completing said call; and
if said call is indicated to be fraudulent and if said dialed number is determined not to be an emergency number, invoking a predetermined fraud handling procedure selected by an operator of said system.
1 Assignment
0 Petitions
Accused Products
Abstract
A call processing system for a wireless communications network comprises a mechanism for detecting a call placed from a mobile station in the network to a multi-digit number dialed by a user of the mobile station; a mechanism for determining whether the call is indicated to be fraudulent; a mechanism for determining whether the dialed number is a predefined multi-digit emergency number; a mechanism for completing the call if the call is indicated not to be fraudulent, or if the dialed number is determined to be an emergency number even if the call is indicated to be fraudulent; and a mechanism for blocking the call if the call is indicated to be fraudulent and the dialed number is determined not to be an emergency number.
56 Citations
22 Claims
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1. A method for processing calls in a wireless communications system, the method comprising the steps of:
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detecting a call placed from a mobile station in said system to a multi-digit number dialed by a user of said mobile station; determining whether said call is indicated to be fraudulent; if said call is indicated to be fraudulent, determining whether said dialed number is a predefined multi-digit emergency number by performing a mini B-number analysis that sequentially compares one or more of the digits of said dialed number to the corresponding digits of said emergency number; if said call is indicated not to be fraudulent or if said dialed number is determined to be an emergency number, completing said call; and if said call is indicated to be fraudulent and if said dialed number is determined not to be an emergency number, invoking a predetermined fraud handling procedure selected by an operator of said system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for processing calls in a wireless communications system, the method comprising the steps of:
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detecting a call placed from a mobile station in said system to a multi-digit number dialed by a user of said mobile station; determining whether said dialed number is a predefined multi-digit emergency number by performing a mini B-number analysis that sequentially compares one or more of the digits of said dialed number to the corresponding digits of said emergency number; determining whether said call is indicated to be fraudulent; if said call is indicated not to be fraudulent or if said call is indicated to be fraudulent but said dialed number is determined to be an emergency number, completing said call; and if said call is indicated to be fraudulent and said dialed number is determined not to be an emergency number, invoking a predetermined fraud handling procedure selected by an operator of said system. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. In a wireless communications network, a call processing system comprising:
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means for detecting a call placed from a mobile station in said network to a multi-digit number dialed by a user of said mobile station; means for determining whether said call is indicated to be fraudulent; means for determining whether said dialed number is a predefined multi-digit emergency number by performing a mini B-number analysis that sequentially compares one or more of the digits of said dialed number to the corresponding digits of said emergency number; means for completing said call if said call is indicated not to be fraudulent, or if said dialed number is determined to be an emergency number even if said call is indicated to be fraudulent; and means for blocking said call if said call is indicated to be fraudulent and said dialed number is determined not to be an emergency number. - View Dependent Claims (20, 21, 22)
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Specification