SONET Thresholds (DS-1 and DS-3 Cards)
The SONET Thresholds subtab allows you to edit SONET thresholds for DS-1 and DS-3 cards. For a list of ONS nodes and cards that support this subtab, see Provisioning.
 
Item
Description
Near End
Select Near End and click Show Thresholds to display the near end thresholds.
Far End
Select Far End and click Show Thresholds to display the far end thresholds.
15 Min
Select 15 Min and click Show Thresholds to enter threshold information for a generation of 15-minute threshold-crossing alerts (TCAs).
1 Day
Select 1 Day and click Show Thresholds to enter threshold information for a generation of 1-day TCAs.
STS
Select the bullet and click Show Thresholds to display the synchronous transport signal (STS) termination thresholds.
VT
(Does not apply to all cards) Select the bullet and click Show Thresholds to display the Virtual Tributary (VT) termination thresholds.
Show Thresholds
Shows selected thresholds.
Reset to Default
Resets the values of all thresholds to the node default threshold values.
Port
Displays the port number.
CV
Sets the threshold for the number of coding violations. Coding violations are bit interleaved parity (BIP) errors that are detected in the incoming signal. The table cell is flagged in red when it exceeds the threshold.
ES
Sets the threshold for 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.
FC
(STS only) Sets the threshold for the failure count.
SES
Sets the threshold for the number of severely errored seconds. A severely errored second is a one-second period with x or more coding violations at that layer or one or more incoming defects at that layer. The value of x depends on the line rate and bit error rate (BER).
UAS
Sets the threshold for the unavailable seconds.
Apply
Applies changes made to the fields in the tab.
Reset
Cancels any changes to the tab and returns the fields to their last-saved settings.
Help
Displays context-sensitive help.

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