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Information in these fields is for the given time period since the last reset. When viewing the 24-hour history statistics screen, use the left and right arrow keys to scroll through all 96 15-minute intervals. See Figure 5-11 and 5-12 MX2800 STS-1 User Manual 61200659L1-1 Chapter 5. Statistics Figure 5-12 on page 5-14 for examples of the VT performance parameter screens. Condition Description CV (Coding Violation) The number of coding violations encountered at the VT layer. ES (Errored Seconds) Number of seconds with one or more coding violations or one or more incoming defects (e.g., AIS, LOP) at the VT layer. SES (Severely Errored Seconds) Number of seconds with X or more coding violations are the VT layer, or a second during which at least one or more incoming defects at the VT layer has occurred. Values of X vary depending on the line rate and the Bit Error Rate. UAS (Unavailable Seconds) Time in seconds that the VT layer has been unavailable for data delivery. The count given reflects the number of times the alarm or state has occurred (rather than the number of seconds the alarm was active). 61200659L1-1 MX2800 STS-1 User Manual Chapter 5. Statistics Figure 5-11. Local VT-CV Performance Parameters (Current 15 Minutes) Figure 5-12. Local VT-CV Performance Parameters (24 Hour History) 5-14 MX2800 STS-1 User Manual 61200659L1-1 Chapter 5. Statistics LOCAL PORT STATISTICS The MX2800 STS-1 keeps track of LOSS OF SIGNAL ALARMS, BIPOLAR VIOLATION COUNTS, AIS LOOP ALARMS, and AIS CARRIER ALARMS for each of the Ports (T1s/E1s) (see Figure 5-13). View this information in one of the three time period selections, or view a cumulative alarm count. Information in these fields is for the given time period (if any) since the last reset. The cumulative alarm count continues indefinitely until CLEAR ALL PORT ALARM COUNTS (located in each field) is selected. Figure 5-13. Local Port Statistics Menu Loss of Signal Alarms The number of times the unit has lost the receive signal on a T1/E1. Bipolar Violation Counts The number of times the unit has received a bipolar violation. AIS Loop Alarms The number of times the T1 has received all ones from the DSX-1 interface. 61200659L1-1 MX2800 STS-1 User Manual Chapter 5. Statistics AIS Carrier Alarms The number of times the T1 has received all ones from the STS side of the network. FAR END STS-1 STATISTICS This menu provides a submenu performance parameters (see Figure 5-14). Figure 5-14. Far End STS-1 Statistics Menu Performance Parameters View performance parameter information for the network in one of the three time period selections. Information in these fields is for the given time period since the last reset. When viewing the 24-hour history statistics screen, use the left and right arrow keys to scroll through all 96 15-minute intervals. See Figure 5-15 and Figure 5-16 on page 5-17, and Figure 5-17 on page 5-18 for examples of the performance parameter screens. Descriptions of the individual performance parameters fields follow the screens. 5-16 MX2800 STS-1 User Manual 61200659L1-1 Chapter 5. Statistics Figure 5-15. Far End STS-1 Performance Parameters (Current 15 Minutes) Figure 5-16. Far End STS-1 Performance Parameters (24 Hour History) 61200659L1-1 MX2800 STS-1 User Manual Chapter 5. Statistics Figure 5-17. Far End STS-1 Performance Parameters (24 Hour Totals) Interval starting at: Time that the 15-minute interval began. This field is displayed only in the 24-hour history screen which gives information for the previous 24 hours divided into 15-minute intervals (shown in Figure 5-6 on page 5-6). Severely Errored Framing Seconds (SEFS) Number of seconds that contain one or more SEF events. This counter is only counted at the Section layer. Section Coding Violations (SCV) Number of coding violations encountered at the Section layer. Line Coding Violations (LCV) Number of coding violations encountered at the Line layer. Path Coding Violations (PCV) Number of coding violations encountered at the Path layer. 5-18 MX2800 STS-1 User Manual 61200659L1-1 Chapter 5. Statistics Section Errored Seconds (SES) Number of seconds with one or more coding violations or one or more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Section layer. Line Errored Seconds (LES) Number of seconds with one or more coding violations or one or more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Line layer. Path Errored Seconds (PES) Number of seconds with one or more coding violations or one or more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Path layer. Section Severely Errored Seconds (SSES) Number of seconds with X or more coding violations at the Section layer, or a second during which at least one or more incoming defects at the Section layer has occurred. Values of X vary depending 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 Line layer, or a second during which at least one or more incomin...

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