Radio wireline interface and method for secure communication
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United States of America Patent
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-
Mar 12, 2002
Grant Date -
N/A
app pub date -
Jul 30, 1998
filing date -
Jul 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interface between a digital communication system and a PSTN establishes a user configurable secure encrypted link to a digital subscriber unit through the digital communication system, and provides clear (unencrypted) voice to telephone sets through the PSTN. The interface includes a security module for encrypting and decrypting information with user specific algorithms and keys, a transcoder for converting modulated voice to digital voice and a modem for modulating and demodulating data and encrypted voice. Accordingly, the wireline interface allows for user specified security over a digital wireless portion of an end-to-end communication channel. The interface also provides for the communication of unencrypted voice followed by secure voice or secure data.
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