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

Douglas A. Deutsch

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Automatic call distribution center with queue position...

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Customer premise equipment interface

Multiplex communications – Diagnostic testing – Determination of communication parameters
Patent

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Customer premise equipment interface

Telephonic communications – Subscriber line or transmission line interface
Patent

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Profile ID: LFUS-PAI-P-777459

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