Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-05-13
1998-04-14
Cumming, William
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
H04Q 738
Patent
active
057405395
ABSTRACT:
A calling system includes radio zones, a mobile telephone terminal, a paging terminal unit, a central control unit, and a notifying section. Each radio zone includes a control unit, a memory unit, a relay station, and calling units. The mobile telephone unit determines a response disabled state of a callee and transmits the corresponding information to the control unit. The main control unit has a main memory unit. The notifying section notifies information indicating the absence of the callee to the control unit, the mobile telephone terminal, and the caller. The position information of the paging terminal unit is sequentially registered in the memory unit, the control unit or the central control unit searches for the paging terminal unit in cooperation with the memory unit or the main memory unit when the callee cannot respond to the incoming call, and when the paging terminal unit is detected, the paging terminal unit is called at a position where the paging terminal unit is detected, and the callee is called via at least one of the calling units which is arranged in the radio zone corresponding to the position where the paging terminal unit is detected.
Cumming William
NEC Corporation
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