4. Multiplex communications
  5. Pathfinding or routing
  6. Switching a message which includes an address header

Hitachi Communications Technologies, Ltd.

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Apparatus and method for data communication on...

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

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Apparatus and method for data communication on...

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

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Busy line display method

Telephonic communications – Multi-line or key substation system with selective switching... – Line status indication or call alerting
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Dynamic VLAN ID assignment and packet transfer apparatus

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
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Optical cross connect apparatus and optical transmission system

Optical communications – Fault recovery – Bypass inoperative element
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