Self-disabling device for a mobile telephone type portable termi

Details Self-disabling device for a mobile telephone type portable termi Self-disabling device for a mobile telephone type portable termi

1995-03-20

1997-08-19

Bost, Dwayne

Telecommunications

Radiotelephone system

Security or fraud prevention

455565, 380 23, H04Q 720, H04Q 732

Patent

active

056595956

ABSTRACT:
A self-disabling device for a portable terminal used in a mobile telephone network includes a register holding an identification number of the portable terminal and a buffer memory for temporarily storing short information messages transmitted by a control station of the network. One message contains a list of identifier numbers of terminals used fraudulently. A comparator compares the identifier number of the terminal with each of the identifier numbers in the list and transmission of calls by the portable terminal is disabled in response to a positive comparison by the comparator.

REFERENCES:
ITG-Fachbericht 124, Sep. 1993, NEU-ULM, GE, pp. 517-526; Heinz et al, "Der Short Message Service -ein neuer dienst der digitalen Mobilkommunikation".

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