Method of and apparatus of individually monitoring transmission sections of a communications transmission link
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United States of America Patent
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-
Mar 10, 1992
Grant Date -
N/A
app pub date -
Dec 13, 1989
filing date -
Dec 23, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for individually monitoring transmission sections of a communication transmission link, whereby auxiliary signals serving the purpose of bit error recognition are newly-calculated when they are regenerated. In order to be able to check monitoring circuits under remote control, the auxiliary signals in a test mode are formed in a manner different from that in a normal monitoring mode. The reception of a prescribed plurality of such auxiliary signals serves as criterion for the test mode.
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