6. Monitoring and Troubleshooting6-16 September 2004 7990-A2-GB20-20Viewing Current DSL PerformanceCurrent DSL Performance Statistics provides a snapshot of the performance of theDSL port. These are the same values displayed for the current interval the DSLError Statistics screen (see Viewing DSL Error Statistics on page 6-10) and theDSL Performance Statistics screen (see Viewing DSL Performance Statistics onpage 6-12).To view the Current DSL Performance, follow this menu selection sequence:Main Menu→Status→Performance Statistics→Current DSL PerformanceSelect PgUp or PgDn to view more statistics.Current DSL Performance Statistics are collected for: Margin: The margin level calculated from the Signal to Noise Ratio (SNR)measured minus the SNR reference. The SNR reference is the value neededto maintain a bit error rate of 10 -7 . Attenuation: The number of dB that the signal has fallen below a referencepoint. Tx Power: The transmit power level.The following Current DSL Performance Statistics are collected for the selectedport: ES (Errored Seconds): Seconds during which one or more CRC errors hasoccurred (as defined in G.826, section 4.1.1). Maximum value is 900. SES (Severely Errored Seconds): Seconds during which 805 or more CRCerrors, more than 16 Frame Alignment Signal (FAS) errors, or at least oneLoss of Signal (LOS) or Alarm Indication Signal (AIS) has occurred. Maximumvalue is 900.main/status/performance/currentModel: 799xCURRENT DSL PERFORMANCE STATISTICSPayload Rate: 1536 KbpsCurrent Interval Timer: 2 DSL Line Rate: 1552 Kbps--------------------------------------------------------------------------------Near End Far EndMargin 02 03Attenuation 00 00Tx Power 13ES 000 000SES 000 000UAS 000 000LOSWS 000 000--------------------------------------------------------------------------------Ctrl-a to access these functions, ESC for previous menu MainMenu ExitPgUp PgDn
