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

Keith S. Kelson

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Optimizing profitability in business transactions

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

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Systems and methods for offering a service to a party...

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

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