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

Barry P. Pershan

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Advanced intelligent network (AIN) functionality for electronic

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring
Patent

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Call notification service for use with call waiting

Telephonic communications – Audio message storage – retrieval – or synthesis – Call source identification
Reexamination Certificate

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Electronic surveillance in a public switched telephone network

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Incoming call tracking with interactive data collection

Telephonic communications – With usage measurement – Call traffic recording or monitoring
Patent

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Profile ID: LFUS-PAI-P-891851

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