4. Telephonic communications
  5. Centralized switching system
  6. Call distribution to operator

Evan Marwell

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Communication assistance system and method

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

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Communication assistance system and method

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

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Communication assistance system and method

Telephonic communications – Special services – Automatic directory service
Reexamination Certificate

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Communication assistance system and method

Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate

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Communication assistance system and method

Telephonic communications – Special services – Automatic directory service
Reexamination Certificate

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