Chapter 4. Status Menu4-2 TSU 120 User Manual 61202129L1-1Network Performance Reports (NI PERF RPTS)The Network Interface Performance Reports display the usercopy of the performance data. The TSU 120 maintains this per-formance data on the network in compliance with ANSI T1.403and AT&T document TR54016. The data displayed is data accu-mulated over the last 15 minutes and over the last 24 hours.Use the scroll keys to access the complete display of the follow-ing report fields, as shown in Figure 4-2:Figure 4-2. Network Interface Performance ReportIf insufficient time has passed to collect data, NA displays.Continue with standard operating procedures to exit the dis-play.When this menu is active, performance data can be cleared bypressing Clear (Shift+9) on the keypad. Only the user copy ofthe performance data is cleared.% AS Percentage of available seconds% EF Percentage of error-free secondsES Number of errored seconds (1 or moreerrors/secondSES Number of severely errored seconds (morethan 320 errors/second)UAS Number of unavailable seconds (10 ormore consecutive seconds)15 Minutes 24 HoursData Values