4. Pulse or digital communications
  5. Transceivers
  6. Modems

Timothy Lis

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Apparatus and method for detecting amplitude modulated answer ba

Pulse or digital communications – Transceivers – Modems
Patent

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Call progress decoder for multiple cadenced tones on telephone l

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

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Profile ID: LFUS-PAI-P-73886

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