4. Telephonic communications
  5. Plural exchange network or interconnection
  6. With interexchange network routing

Mami Oka

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Line switching system

Multiplex communications – Wide area network – Packet switching
Patent

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Method and apparatus for data transfer and circuit setting for c

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Patent

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Profile ID: LFUS-PAI-P-708620

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