ATM communication apparatus and failure detection and notification circuit
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United States of America Patent
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-
Oct 24, 1995
Grant Date -
N/A
app pub date -
May 31, 1994
filing date -
May 31, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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