ADTRAN Total Access OC-3 L3 Installation And Maintenance Practice

ADTRAN Total Access OC-3 L3 Installation And Maintenance Practice Manual pdf 17 page image

61181031L3-5A 17Online/AllowOnline/Allow indicates that the OC-3 MUX is Onlineand a standby OC-3 MUX can be switched to upondetection of fault condition.Online/InhibitOnline/Inhibit indicates that the OC-3 MUX is onlinebut inhibited from switching to a standby OC-3 MUXupon detection of fault condition.Offline/AllowOffline/Allow indicates that the OC-3 MUX is offline,or in standby mode. If the online OC-3 MUX switchesover due to a fault condition, the OC-3 MUX is allowedto switch back over to the original online OC-3 MUXupon a subsequent fault condition.Offline/InhibitOffline/Inhibit indicates that the OC-3 MUX is offline,or in standby mode. The offline OC-3 MUX maybecome the online OC-3 MUX due to a fault condition,but is inhibited from switching back again upon a subse-quent fault condition.Active OSI StackConsult Technical Support (ADTRAN TechnicalSupport on page 26) for information on this option.Alarms MenuFigure 11 represents the OC-3 MUX Alarms menu,which displays real-time alarms for the MUX module.The date, time, and a brief description of the alarm areincluded. The alarm is displayed until the condition iscleared.NOTEThis is not an alarm history log. All alarms arelogged into an alarm history buffer within theSCU..Figure 11. Alarms MenuTest MenuFigure 12 represents the OC-3 MUX Test menu. In thisscreen, perform various loopback tests at the OC-3, DS3#1 and #2, and DS1 levels unless the module is in the“In Service” state, which makes this option unavailableand read-only. Although it is possible to performloopbacks in both the “Out of Service, Maintenance”and “Out of Service, Unassigned” states, the “Out ofService, Maintenance” state is recommended.The loopbacks on this menu are described below:OC-3 Line LoopThis loopback test loops the data from the network backtoward the network.OC-3 Local LoopThis loopback test Loops the multiplexed data from theAccess modules back toward the Access modules.Shelf: 1 Slot: B Total Access System 01/09/03 17:28Unacknowledged Alarms: NoneAlarmsAll alarms shownDate Time Description Level01/03/03 11:10:01 OC-3 Loss of Signal (LOS) Critical01/03/03 11:10:15 Clock in Holdover Alert-------------------------------- END OF ALARMS --------------------------------\'?' - System Help Screen