DT Etherlink IV User Manual- 55 -4.6.4 Fault and Maintenance Management MenuAfter typing “2” in the main menu and pressing , the following message is displayed:Fault and maintenance management activatedEnter 'M' to return to MAIN, or 'H' for HELP informationCO_PM>4.6.4.1 CommandType and the monitor lists all available commands in the fault and maintenance sub-menu. Ifyou type H [command] you will get additional help on [command].CO_FMM>H-------------------------------------------------------------------------------Type 'H [command]' to get additional help on [command]NM Trace xDSL noise marginSTATUS Show current DSL working parametersSTATUS T Show current DSL working parameters continuouslySTATUS L Show current DSL and LINK payload parametersSTATUS ETH Show Ethernet statusSTATUS EXT Show Nx64 statusLOOP1 [ON/OFF] [N] Start/stop local loopback at Nth E1 interfaceLOOP2 [N:[A/R]] [ON/OFF] Starts/stops the remote loopback at Nth xDSL interfaceALARM Display alarmsALARM T Display alarms continuouslyACO Show alarm cutoff configurationACO [GROUP] [ON/OFF] Change alarm indication for alarm group GROUPSTARTAL [N] Toggles Nth xDSL channel the analog loopback ON/OFFRESTART [N] Restart Nth xDSL channelRESET Reset modemAPPLY [ALL/GROUP] Apply changes to running configurationCONFIRM Confirm running configurationBACKUP Backup running configurationRESTORE Restore startup configuration from backupDIFF [N/R/S/B] [N/R/S/B] Show difference between configurationsDUMP [N/R/S/B] Dump selected configurationLOAD Load configuration via XModemTLM Show external alarm statusTLM D Show external alarm reactionTLM S [N:Rnn-Rkk] [ABC] Set up external alarm reactionTLM C Clear external alarm tableCONNECT [N:[1-13/R]] Establish connection to remote unitLINK [NN] Establish local connectionLINKCLEAR Exit all local connectionsSOFTUPDATE Update softwareTFTP [CMD] [ARG1][ARG2] Perform maintenance over TFTPSOFTCONFIRM Confirm uploaded softwareSOFTINFO List loaded softwarePING x.x.x.x PING hostM Return to Main MenuH Show available commands-------------------------------------------------------------------------------CO_FMM>4.6.4.2 CommandThe command displays the ITU-T G.991.2 Noise Margin. It means the maximum possibleincrease in the Noise Margin for which the BER is expected to be not less than 10-7 [dB].CO_FMM>NMChannel: DSL1 DSL2 DSL3 DSL4SHDSL NM: 10.5 11.5 10.5 10.0 dBSHDSL NM: 10.5 11.5 10.5 10.0 dBSHDSL NM: 10.5 11.5 10.5 10.0 dBCO_FMM>The number of columns is equal to the number of SHDSL channels of the device.A normal quality of a SHDSL data transmission is possible for NM ≥ 6 dB.