Detecting unauthorized modification of communication unit based

Details Detecting unauthorized modification of communication unit based Detecting unauthorized modification of communication unit based

1993-08-13

1995-02-07

Bowler, Alyssa H.

Telephonic communications

Special services

Anonymous party

395575, 379 62, 379 95, 379118, 379145, 371 671, 3642223, 3642225, 3642531, 3642840, 3642854, 364DIG1, G06F 1108

Patent

active

053882121

ABSTRACT:
A database unit monitors the communications occurring within at least one communication system for hardware identification codes of communication or broadcast units. Upon detecting the hardware identification code, the database unit compares the one received with a stored hardware identification code for the unit. When the stored hardware code does not match the one received, the database unit indicates that the unit has undergone an unauthorized modification.

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patent: 4639549 (1987-01-01), Hirayama et al.
patent: 4731813 (1988-03-01), Schroeder
patent: 4953198 (1990-08-01), Daly et al.
patent: 5022067 (1991-06-01), Hughes
patent: 5109537 (1992-04-01), Toki
patent: 5239294 (1993-08-01), Flanders et al.
patent: 5249181 (1993-09-01), Wang et al.
patent: 5255183 (1993-10-01), Katz

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