Global patent index - EP 0988765 A1

EP 0988765 A1 2000-03-29 - SYSTEM AND METHOD FOR DETECTING UNAUTHORIZED USE OF A CELLULAR TELEPHONE

Title (en)

SYSTEM AND METHOD FOR DETECTING UNAUTHORIZED USE OF A CELLULAR TELEPHONE

Title (de)

SYSTEM UND VERFAHREN ZUR ERKENNUNG UNERLAUBTER NUTZUNG EINES ZELLULAREN TELEFONS

Title (fr)

SYSTEME ET PROCEDE DE DETECTION DES UTILISATIONS NON AUTORISEES DES TELEPHONES CELLULAIRES

Publication

EP 0988765 A1 (EN)

Application

EP 98928032 A

Priority

  • CA 9800572 W
  • US 87287997 A

Abstract (en)

[origin: WO9857514A1] A system and method for detecting and preventing cellular fraud in a cellular network. The network includes a database such as a home location register that stores a listing of potential terminating numbers that the authorized user is allowed to call. Therefore, whenever a call is initiated by a cellular telephone using the identification number of the authorized user, the called number is compared to the listing. If the called number is in the listing, the call completes normally. If not, an additional level of security can be provided. For example, the caller may be prompted for a security code, the caller may be transferred to a service center, or the caller may be transferred to a cellular-fraud-prevention task force. If, in the first example, the caller supplies the correct security code, then it is assumed that he is the authorized user and the call completes normally. Furthermore, the called number may then be added to the listing. Otherwise, it is assumed that the caller is a fraudulent user and is handled accordingly.

IPC 1-7 (main, further and additional classification)

H04Q 7/38

IPC 8 full level (invention and additional information)

H04W 12/06 (2009.01)

CPC (invention and additional information)

H04W 12/12 (2013.01); H04W 12/06 (2013.01)

Citation (search report)

See references of WO 9857514A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9857514 A1 19981217; AU 8005698 A 19981230; CA 2293450 A1 19981217; EP 0988765 A1 20000329

INPADOC legal status

2002-07-24 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020529

2000-09-27 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NORTEL NETWORKS LIMITED

- Ref Legal Event Code: RAP1

2000-03-29 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991220

2000-03-29 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB