Method for encryption sync compression in an encrypted radio telephone interconnect system
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United States of America Patent
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Nov 1, 1994
Issued Date -
N/A
app pub date -
May 7, 1993
filing date -
Feb 28, 1991
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Abstract
A method for transparently coupling an encrypted two-way RF communication unit (100) with an encrypted landline communication unit (104). An RF message comprised of a plurality of data frames (401,402, 403) is transmitted from the RF communication unit (100), wherein a plurality of the data frames include encrypted voice information (403). Some bits from the data frames (501,502) are selectively removed, without removing the encrypted voice information (503), to form reduced bit data frames, and the reduced bit data frames are transmitted via the landline to the landline communication unit (104).
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