4. Multiplex communications
  5. Pathfinding or routing
  6. Combined circuit switching and packet switching

James D. O'Brien, Jr.

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Presence detection for cellular and internet protocol telephony

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Voice over Internet Protocol real time protocol routing

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2429890

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