Radio wireline interface and method for secure communication
US6356638B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1998 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Jul 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K1/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.