ATM communication apparatus and failure detection and notificati

Details ATM communication apparatus and failure detection and notificati ATM communication apparatus and failure detection and notificati

1994-05-31

1995-10-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, H04J 116

Patent

active

054616077

ABSTRACT:
In an ATM communication apparatus, the same failure detection process is conducted for the detection of a failure state of a VP when a transmission line of the apparatus fails and the detection of the failure state of the VP when a VP-AIS cell generated by another apparatus is received. When an AIS cell generation unit receives a channel failure signal generated by a line terminator, it generates an AIS cell and inserts it in a receiving cell stream. A circuit provided at downstream of the cell stream copies or extracts the AIS cells, determines the failure state, generates a FERF cell in accordance with the determination, and inserts it in a sending cell stream.

REFERENCES:
patent: 5185743 (1993-02-01), Murayama et al.
patent: 5313453 (1994-05-01), Uchida et al.
patent: 5339310 (1994-08-01), Taniguchi

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