Cellular telephone with programmable authorized telephone number
作者： Jocelyn Zirul , Raymond J. Menard
DOI:
关键词:
摘要: A cellular telephone having restricted dialing authority and a simplified keypad. The keypad includes plurality of preprogrammed hot keys. Incoming calls from authorized numbers are answerable incoming other do not ring. programmable. In one embodiment, predetermined encoded messages can be transmitted silently.
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