4. Telephonic communications
  5. Centralized switching system
  6. Class of service determination or transmission

Peter Hanselka

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Circuit arrangement for telecommunications switching systems, pa

Telephonic communications – Centralized switching system – Class of service determination or transmission
Patent

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Switching equipment for setting up a connection between at...

Telephonic communications – With usage measurement – Call traffic recording or monitoring
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1502723

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