Wireless telephone with frequency inversion scrambling

Details Wireless telephone with frequency inversion scrambling Wireless telephone with frequency inversion scrambling

H - Electricity

04

K

H04K 1/04 (2006.01) H04M 1/68 (2006.01) H04M 1/725 (2006.01)

Patent

CA 2074610

The wireless telephone of the present invention is com- prised of a base unit, coupled to a land-line telephone system, and a remote unit that communicates with the base unit over radio frequencies. The remote unit has scrambling circuits (207 and 216) for encrypting voice signals transmitted to the base unit and decrypting voice signal received from the base unit. The base unit also has scrambling circuits (107 and 116) for encrypting voice signals transmitted to the remote unit and decrypting voice signals received from the remote unit. The wireless telephone uses a keypad (222) for initiating a demonstration mode that allows both parties to the conversa- tion to hear the scrambled audio signal.

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