Processing of emergency calls in wireless communications system

Details Processing of emergency calls in wireless communications system Processing of emergency calls in wireless communications system

1997-06-23

2000-03-14

Trost, William G.

Telecommunications

Radiotelephone system

Security or fraud prevention

455404, 455411, H04Q 720

Patent

active

060384409

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.

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