Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1997-02-03
1999-03-16
Cumming, William
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
379 8823, H04Q 000
Patent
active
058841938
ABSTRACT:
A keypad is operated by the user to generate keypad data indicative of a destination telephone number. A storage area stores data related to the calling plan and containing data indicative of call restrictions that may apply to the destination telephone number. A call restriction storage area is used to store user-selectable call restriction data. A processor accepts and uses keypad data to access the data storage area. The processor compares data indicative of call restrictions that may apply to the destination telephone number with the user-selectable call restriction data to determine if any user-selectable call restrictions apply to the destination telephone number. The processor sets an enable signal to an enabled state if no call restrictions apply to the destination telephone number and sets the enable signal to a disabled state if call restrictions do apply to the destination telephone number.
REFERENCES:
patent: 4658096 (1987-04-01), West, Jr. et al.
patent: 4737975 (1988-04-01), Shafer
patent: 4775997 (1988-10-01), West, Jr. et al.
patent: 4922517 (1990-05-01), West, Jr. et al.
Brown Charles D.
Cumming William
Martin Roger W.
Miller Russell B.
Qualcomm Incorporated
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