4. Telephonic communications
  5. Centralized switching system
  6. Single switchboard

René Petersen

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Call routing data management

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Reexamination Certificate

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Method and arrangement for controlling alternative routing...

Telephonic communications – Centralized switching system – Single switchboard
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2614779

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