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Hatteras HN404-CPi & HN408-CPi Normal Status Lights

HN404-CPi and HN408-CPi
Description & Suggested Action (Likely Failures in Bold)
OK Unlit/Green (Flashing) Power supply is not connected - system is starting up.
FAIL Red (Solid) // Contact Carrier.
A & B Unlit Primary and optional secondary power supply are not connected. No power!
2BASE-TL PAIRS Unlit Loop failure. // Contact Carrier and advise.
2BASE-TL PAIRS 250ms ON, 250ms OFF for 1 minute then dark for 30 seconds. Loop has signal and is handshaking but can't get a sync. // Call Carrier and advise.

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The Story Behind "Status Lights"

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