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

Vesa Heikkila

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Method for handling collision of calls

Telecommunications – Radiotelephone system – Including private cordless extension system
Patent

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Method for transmitting tariff data to a subscriber unit

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

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Procedure for the processing of an unexpected disconnect...

Telephonic communications – Centralized switching system
Reexamination Certificate

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System for establishing a register recall during an active call

Telecommunications – Radiotelephone system – Special service
Patent

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Profile ID: LFUS-PAI-P-347858

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