4. Telephonic communications
  5. Plural exchange network or interconnection
  6. Connection call model

James C. Frauenthal

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Automated near-end distortion detection for voice...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Reexamination Certificate

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Automatic call distributor telephone service

Telephonic communications – Plural exchange network or interconnection – Connection call model
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Characterization of impaired intervals in a voice over...

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1462225

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