4. Telephonic communications
  5. Special services
  6. Audible paging

Claus Rist

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Method for call answering in a distributed communications...

Telephonic communications – Special services – Audible paging
Reexamination Certificate

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System for accessing different resources having the same...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2923940

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