OTN > ITU-T G.709 Thresholds
The OTN > ITU-T G.709 Thresholds tab allows you to provision the ITU-T G.709 thresholds for the TXP and MXP cards.
 
Item
Description
Port
Displays the port number.
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.
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.
UAS
Sets the threshold for the unavailable seconds.
BBE
Sets the threshold for the background block errors.
FC
Sets the threshold for the failure count.
Directions
Select near end or far end for the PM direction.
Intervals
Select 15 Min or 1 Day for the PM interval.
Types
Two types are available:
 •
SM (OTUk)—Optical channel transport unit order of k section monitoring. The OTUk includes FEC and overhead for management and PM. The FEC is based on Reed Solomon specified in the ITU-T G.975 standard.
 •
PM (ODUk)—Optical channel data unit order of k performance monitoring. The ODUk is composed of several overheads for path performance monitoring, tandem connection monitoring (TCM), communication channels, and protection control (APS/PCC).
Refresh
Refreshes the display after the interval is changed.
Reset to Default
Resets the values of all thresholds to the node default threshold values.
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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