Chapter 5. Statistics61200659L1-1 MX2800 STS-1 User Manual 5-19Section Errored Seconds (SES)Number of seconds with one or more coding violations or one ormore incoming defects (e.g., SEF, LOS, AIS, LOP) at the Sectionlayer.Line Errored Seconds (LES)Number of seconds with one or more coding violations or one ormore incoming defects (e.g., SEF, LOS, AIS, LOP) at the Linelayer.Path Errored Seconds (PES)Number of seconds with one or more coding violations or one ormore incoming defects (e.g., SEF, LOS, AIS, LOP) at the Pathlayer.Section Severely Errored Seconds (SSES)Number of seconds with X or more coding violations at the Sectionlayer, or a second during which at least one or more incomingdefects at the Section layer has occurred. Values of X varydepending on the line rate and the Bit Error Rate.Line Severely Errored Seconds (LSES)Number of seconds with X or more coding violations at the Linelayer, or a second during which at least one or more incomingdefects at the Line layer has occurred. Values of X vary dependingon the line rate and the Bit Error Rate.Path Severely Errored Seconds (PSES)Number of seconds with X or more coding violations at the Pathlayer, or a second during which at least one or more incomingdefects at the Path layer has occurred. Values of X vary dependingon the line rate and the Bit Error Rate.
