The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2002
Filed:
Dec. 09, 1999
Applicant:
Inventors:
Anna L. Harrison, Littleton, CO (US);
Erin C. Jackman, Petaluma, CA (US);
Dean Marchand, Brighton, CO (US);
Assignee:
MCI WorldCom, Inc., Jackson, MS (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/38 ;
U.S. Cl.
CPC ...
H04M 3/38 ;
Abstract
A system and method for detecting and preventing a fraudulent telephone call in telecommunication system is provided. First, a terminating number of a first call and a originating number of a second call are received from a telecommunication network. The terminating number of the first call is compared with the originating number of the second calls which are originated within a predetermined time period from a termination of the first call. After comparison, it is determined whether the first and the second calls are fraudulent telephone call.