Serial network fault detection, isolation and restorative device

Details Serial network fault detection, isolation and restorative device Serial network fault detection, isolation and restorative device

1995-01-31

1996-07-09

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

39518202, H04J 314

Patent

active

055351921

ABSTRACT:
A serial network fault isolation device for use in a network hub has receive and transmit buffers connected to the network. An isolation switch which allows the receive buffer to receive network signals while the transmit buffer sends signals such as media access control (MAC) frames supplied by the hub processor. A decoder connected to the receive buffer recognizes received (MAC) frames and interrupts the hub processor which reads the MAC frame. An idle character generator also under control of the hub processor is used to synchronize the circuit when the hub processor inserts the fault isolation device in the network.

REFERENCES:
patent: 4527270 (1985-07-01), Sweeton
patent: 5105188 (1992-04-01), Jung et al.
patent: 5132962 (1992-07-01), Hobgood et al.

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