926 NTAK79 2.0 Mb PRI cardTable 377NTAK79 LEDsLED State DefinitionOn (Red) The NTAK79 2MB PRI circuit card is either disabled orout-of-service.OOSOff The NTAK79 2MB PRI is not in a disabled state.ACT On (Green) The NTAK79 2MB PRI circuit card is in an active state.Off The NTAK79 2MB PRI is not in a disabled state. The OOSLED turns red.RED On (Red) A red alarm state has been detected. This represents alocal alarm state of:Loss of Carrier (LOS)Loss of Frame (LFAS), orLoss of CRC Multiframe (LMAS).Off No red (local) alarm.YEL On (Yellow) A yellow alarm state has been detected. This represents aremote alarm indication from the far end. The alarm maybe either Alarm Indication (AIS) or Remote Alarm (RAI).Off No yellow (remote) alarm.LBK On (Green) 2MB PRI is in loop-back mode.Off 2MB PRI is not in loop-back mode.On (Red) The clock controller is switched on and disabled.On (Green) The clock controller is switched on and is either locked to areference or is in free run mode.CCFlashing (Green) The clock controller is switched on and is attempting tolock (tracking mode) to a reference. If the LED flashescontinuously over an extended period of time, check theCC STAT in LD60. If the CC is tracking this may bean acceptable state. Check for slips and related clockcontroller error conditions. If none exist, then this stateis acceptable, and the flashing is identifying jitter on thereference.DCH On (Red) DCH is equipped and disabled.On (Green) DCH is equipped and enabled, but not necessarilyestablished.Off DCH is switched off.The NTAK79 uses a standard 9.5" by 12.5" multi-layer printed circuit board.The faceplate is 7/8" wide. The NTAK79 circuit card has a total of sevenfaceplate LEDs. Five of the LEDs are directly associated with the operationNortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
