Physical description 881LED State DefinitionOff No far end alarm.LBK On (Yellow) NTAK10 is in loop-back mode.Off NTAK10 is not in loop-back mode.CC On (Red) The clock controller is switched on and disabled.On (Green) The clock controller is switched on and is either locked to a referenceor is in free-run mode.Flashing (Green) The clock controller is switched on and locking onto the primaryreference.Off The clock controller is switched off.Note: See "Clock controller interface" (page 894) in this chapter formore on tracking and free-run operation.The 2Mb DTI pack uses a standard IPE-sized (9.5" by 12.5"), multilayerprinted circuit board. The faceplate is 7/8" wide and contain six LEDs.In general, the LEDs operate as follows:• after the card is plugged in, the LEDs (a-e) are turned on by thepower-up circuit. The clock controller LED is independently controlledby its own microprocessor• after initialization, the LEDs (a-e) flash three times (0.5 seconds on,0.5 seconds off) and then individual LEDs go into appropriate states,as shown in Table.Table 365NTAK10 LED statesLED State DefinitionDIS On (Red) The NTAK10 circuit card is disabled.Off The NTAK10 is not in a disabled state.OOS On (Yellow) The NTAK10 is in an out of service stateOff The NTAK10 is not in an out of service stateNEA On (Yellow) A near end alarm state has been detectedOff No near end alarmFEA On (Yellow) A far end alarm state has been detectedOff No far end alarmLBK On (Yellow) NTAK10 is in loop-back modeOff NTAK10 is not in loop-back modeCC On (Red) The clock controller is switched on and disabledNortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
