4. Telephonic communications
  5. Audio message storage, retrieval, or synthesis
  6. Call source identification

Estech Systems, Inc.

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Communications system enhanced with human presence sensing...

Telephonic communications – Audio message storage – retrieval – or synthesis – Voice activation or recognition
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Dial on-hold

Telephonic communications – Centralized switching system – Call distribution to operator
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Dialing using caller ID

Telephonic communications – Audio message storage – retrieval – or synthesis – Call source identification
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Dialing using caller ID

Telephonic communications – Audio message storage – retrieval – or synthesis – Call source identification
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Quality of service in a remote telephone

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
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