4. Multiplex communications
  5. Pathfinding or routing
  6. Combined circuit switching and packet switching

Andrew Ritchie

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Distributed voice processing system

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

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Distributed voice processing system

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

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Suppression of call answer supervision in a telephone network by

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Patent

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Voice processing system

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

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Voice processing system

Telephonic communications – Audio message storage – retrieval – or synthesis – Voice activation or recognition
Reexamination Certificate

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Profile ID: LFUS-PAI-P-474866

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