Monitoring the Unit6-57924-A2-GB20-10PRELIMINARY DRAFTJune 1997Front Panel LEDsDSX-1-Compatible UnitUpon power up, the first three LEDs blink in sequence, indicating a successfulstart configuration. The green PWR LED lights whenever power is applied to theboard. Loop LEDs blink until the loop has been synchronized and then remain off.TMTERMINALT1 HDSLLocalRemoteLoop BkPWRFAILLoop ALoop BNETWORK SYSTEM HDSLTM7900790097-15312LED MeaningLocal The local T1 interface has a loss of signal.Remote The remote T1 interface has a loss of signal.Loop Bk A loopback has been initiated for testing the equipment connected to thisunit.PWR Power is applied to the unit.FAIL The processor has halted and repairs are required.Loop A HDSL Loop A has failed. (The LED will blink at board power up until theloop has been synchronized.)Loop B HDSL Loop B has failed or has been disabled. (The LED will blink atboard power up until the loop has been synchronized.)