The STM-1 Line > SDH Threshold subtab allows you to view the SDH thresholds for the optical line of
the OSC-CSM and OSCM cards.
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Displays the port number.
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Errored block indicates that one or more bits are in error within a block.
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Displays the number of errored seconds. An errored second is a one-second period with one or more coding violations at that layer or one or more incoming defects at that layer.
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Displays the number of severely errored seconds. A severely errored second is a one-second period with x or more coding violations at layer one or more incoming defects at that layer. The value of x depends on the line rate and bit error rate.
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Background block error is an errored block not occurring as part of an SES.
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Displays the unavailable seconds.
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Select near end or far end for the PM direction.
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Select 15 Min or 1 Day for the PM interval.
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Select MS (multiplex section), RS (regenerator section), or Path, where applicable.
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Refreshes the thresholds display.
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Applies changes made to the fields in the tab.
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Cancels any changes to the tab and returns the fields to their last-saved settings.
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Displays context-sensitive help.
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