Network system having a line switching function

Details Network system having a line switching function Network system having a line switching function

1991-10-21

1993-03-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

34082501, 371 81, H04J 0314

Patent

active

051930862

ABSTRACT:
A network system includes a plurality of nodes connected to each other via line switching units through communication lines and backup lines and a network control unit connected to the line switching units. At an occurrence of a communication line failure, the network control unit supplies the line switching units with a line switching instruction to change over from the failed line to backup lines.

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patent: 4920529 (1990-04-01), Sasaki et al.
patent: 4967406 (1990-10-01), Yagi et al.

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