DT Etherlink IV User Manual- 49 -4.6.3 Performance Management MenuAfter typing “1” in the main menu and pressing , the following message is displayed:Performance management activatedEnter 'M' to return to MAIN, or 'H' for HELP informationCO_PM>4.6.3.1 CommandType and the monitor list all available commands in the performance sub-menu. If you type H[command] you will get additional help on [command].CO_PM>H-------------------------------------------------------------------------------Type 'H [command]' to get additional help on [command]APPLY [ALL/GROUP] Apply changes to running configurationG826 Display xDSL G.826 statisticsG826 C Display xDSL G.826 statistics continuouslyG826 E1 Display E1 G.826 statisticsG826 E1 C Display E1 G.826 statistics continuouslyALLG826 N Display xDSL G.826 statistics for all linkRESETG826 Reset G.826 statisticsRESETALLG826 N Reset xDSL G.826 statistics for the whole linkLINKSTAT Display link status of all xDSL channelsALARMLOG [N] Display the link alarm logALARMLOG C Clear the link alarm logCONNECT [N:[1-13/R]] Establish connection to remote unitLINK [NN] Establish local connectionLINKCLEAR Exit all local connectionsM Return to Main MenuH Show available commands-------------------------------------------------------------------------------CO_PM>4.6.3.2 CommandThe command displays the ITU-T G.826 performance parameters of the SHDSL line.Depending on the number of SHDSL channels in the system, a table is displayed containing 1, 2 or4 columns of data.CO_PM>G826--------------------------------------------------------------------------------G.826 Error Performance : CRC6 1 CRC6 2 CRC6 3 CRC6 4--------------------------------------------------------------------------------Errored blocks : 0000000000 0000000000 0000000000 0000000000Errored seconds : 0000000000 0000000000 0000000000 0000000000Severely errored seconds : 0000000000 0000000000 0000000000 0000000000Background block errors : 0000000000 0000000000 0000000000 0000000000ESR [%] : 0.00 0.00 0.00 0.00SESR [%] : 0.00 0.00 0.00 0.00BBER [%] : 0.00 0.00 0.00 0.00Available time : 0000005360 0000005360 0000005359 0000005359Unavailable time : 0000000031 0000000031 0000000032 0000000032-------------------------------------------------------------------------------CO_PM>Option: С – update the table continuously.CRC6 – Cyclic redundancy check indicating errored blocks received on the SHDSL side.Errored Block (EB) – A block (transmission duration 6ms) in which one or more bits have errors.Errored Seconds (ES) – A second period with one or more errored blocks or at least one defect.Severely Errored Seconds (SES) – A one-second period, which contains more than 30% of erroredblocks per second from the total number of all received blocks. SES is a subset of ES.Background Block Error (BBE) – An errored block not occurring as a part of SES.Errored Second Ratio (ESR) – The ratio of ES to total seconds in available time during a fixedmeasurement interval.
