Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2003-09-26
2010-12-07
Chang, Kent (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S450000, C455S456600, C455S404200
Reexamination Certificate
active
07848760
ABSTRACT:
A telecommunications system includes a wireless device (150) including a positioning controller (504) and a communications controller (502), said wireless device adapted to cause an audible warning to be generated if said wireless device is determined to be outside a first predetermined range; and an administrative device (30-152) for receiving alerts from said wireless communication device via said communications controller when said positioning controller determines that said wireless device is outside said first predetermined range for longer than a predetermined period or is outside said first predetermined range and a second predetermined range.
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Beyda William J.
Caspi Rami
Chang Kent
Lee Justin Y
Siemens Enterprise Communications, Inc.
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