Secure communication system

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy

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Details

379 98, 455 121, H04M 1100

Patent

active

054043948

ABSTRACT:
A communication system including: a first secure communication terminal for providing analog voiceband data; a first processing circuit connected to receive the secure data from the first secure communication terminal and for converting the received data into secure baseband data, the first processing circuit transmitting the baseband data; a second processing circuit connected to receive the transmitted baseband data from the first processing circuit, and for converting the received baseband data into analog voiceband data; and a second secure communication terminal for receiving the analog voiceband data from the second processing circuit. The communication system is especially applicable for handling secure data transmitted by a STU-III.

REFERENCES:
patent: 5150401 (1992-09-01), Ashby, III et al.
patent: 5166977 (1992-11-01), Ross
patent: 5282238 (1994-01-01), Berland

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