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

Takemasa Takahashi

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Band control system for a digital subscriber network and...

Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate

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Band control system for a digital subscriber network and...

Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate

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Telephone call fee notifying system and telephone call fee notif

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

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Profile ID: LFUS-PAI-P-1255844

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