Troubleshooting | Error Detection |
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ALARM LED
The ALARM LED lights red when an error occurs in the equipment.
The ALARM lamp flashes if an error occurs when the equipment is being booted. In this case, the cause of the fault may be determined by the number of times the lamp flashes.
Flash Count | Error |
1 | ROM check sum |
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2 | SKM G/A register check |
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3 | Super I/O register check |
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4 | DRAM memory check |
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5 | Serial register check |
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6 | Serial loopback |
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RCV, INS (LEDs on line cards)
Available for each line, these lamps indicate the status of that particular line.
RCV (red) | INS (green) | Status |
Off | Lighted | Line status normal |
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Lighted | Off | Line error (reception error) |
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Off | Flashing | Line error (transmission error) |
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Off | Off | Hardware error |
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Centillion 1200N ATM Switch User Manual | |
NTP |
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