ADTRAN NT1 ACE 4
Normal Status Lights

Light	STATUS	Description & Suggested Action
READY	Green (Solid/Flashing)	S/T & U interfaces are ready to place a call.
	Flash 8 CPS	Carrier failure, BRI circuit is down. // Call your Carrier. They need to perform a BERT test on the circuit. If inconclusive, they must come to your site & connect with a BRI test set.
	Flash 1 CPS	PBX failure. // Disconnect from NT1 to telephone system. // Call your Vendor.
ERROR	Occasional or Solid Red	It's a line quality problem the Carrier must fix. // Call the Carrier and have them run a 20 minute BERT test & send results to your Vendor.
Circuits 1 & 2 OK. Circuits 3 READY light flashing 1 CPS Circuits 4 READY light flashing 8 CPS Make sure the Carrier does not test the wrong circuit. Any obtrusive test on a solid green working circuit will cause the green light to blink.

For more information or to have your device listed please contact Infotel Systems

The Story Behind "Status Lights"

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