4. Telephonic communications
  5. Subscriber line or transmission line interface

Andre Bonvallet

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Central office line interface circuit for an analog network priv

Telephonic communications – Subscriber line or transmission line interface
Patent

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Low-frequency alternating current signal detector, in particular

Telephonic communications – Supervisory or control line signaling – Signal receiver
Patent

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Private telephone installation architecture

Multiplex communications – Wide area network – Packet switching
Patent

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Telephone charging signalling detector suitable for central offi

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Patent

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Profile ID: LFUS-PAI-P-1114623

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