4. Telephonic communications
  5. With usage measurement
  6. Call charge metering or monitoring

Robert Frank Dickerman

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Method and computer program logic for providing an intelligent n

Telephonic communications – Centralized switching system – Call distribution to operator
Patent

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System and method for providing operator and customer services

Telephonic communications – Centralized switching system – Call distribution to operator
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Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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