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

Klaus Leutner

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Broadcast method for simultaneous switching of an announcement t

Multiplex communications – Special services
Patent

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Circuit arrangement for telecommunications switching systems, pa

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

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Method for checking a switching center, line unit and...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-343074

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