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

Lester Son-Hing

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Method and apparatus for real-time billing account query

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

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Method and apparatus in a communications system for...

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

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Per call real time billing display

Data processing: financial – business practice – management – or co – For cost/price – Time
Reexamination Certificate

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