Use the SDH Thresholds tab to provision ONS
15454 SDH electrical card SDH thresholds. (Thresholds are not displayed until a circuit is created.) For a list of ONS nodes and cards that support this subtab, see
Provisioning.
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Select Near End and click Show Thresholds to display the near-end thresholds.
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Select Far End and click Show Thresholds to display the far-end thresholds.
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Select 15 Min and click Show Thresholds to enter threshold information for a generation of 15-minute threshold crossing alerts (TCAs).
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Select 1 Day and click Show Thresholds to enter threshold information for a generation of 1-day TCAs.
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Select VC LO and click Show Thresholds to display the virtual container (VC) low order (LO) thresholds.
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Select VC4 and click Show Thresholds to display the VC4 thresholds.
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Shows selected thresholds.
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Resets the threshold values to the node default threshold values.
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Displays the port number.
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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 1 or more incoming defects at that layer. The value of x depends on the line rate and bit error rate.
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Errored block indicates that one or more bits are in error within a block.
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Displays the unavailable seconds.
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Background block errors are errored blocks that do not occur as part of an SES.
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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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