4. Telephonic communications
  5. Special services
  6. Call diversion

Volkmar Naumburger

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Method for adapting supplementary equipment to an analog...

Telephonic communications – Supervisory or control line signaling – Substation originated
Reexamination Certificate

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Method of providing a dial-in function in telecommunication...

Telephonic communications – Special services – Call diversion
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2513803

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