### About Alarms

Alarm Type | Indication and Corrective Action
Red | Means loss-of-signal or out-of-frame condition. Ensure that the cable is plugged in and configured properly. Also ensure that the driver is configured for the line encoding used by the telephone company. If you cannot correct the problem, call the telephone company.
Yellow | Usually means that the telephone company is testing the line. If this condition persists, call the telephone company. This alarm may also indicate that the driver's long-haul/short-haul configuration is wrong. Have the telephone company confirm the distance to the nearest repeater and then ensure that the driver's configuration is correct.
Blue | Means that the telephone company is testing the line. If this condition persists, call the telephone company.

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