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ADTRAN HTU-R Card
Normal Status Lights

Light
STATUS
Description & Suggested Action
LP1/LP2UnlitNo sync. // Call your Carrier.
RedPoor signal quality. // Call your Carrier.
YellowMarginal signal quality. // Call your Carrier.
RED - FlashingError detected on HTU-C or HTU-R. // Call your Carrier.
DS1UnlitPremise equipment T1 signal not present or wrong format. // Call your Vendor.
RED - FlashingPremise equipment T1 signal errors. // Call your Vendor.
ALMRed Local alarm at HTU-R Card detected.
YellowRemote alarm at HTU-C card detected.
ESF/SFUnlitUnframed mode. // Call your Carrier.
YellowESF Framing
GreenSF Framing
B8ZS/AMIYellowB8ZS
GreenAMI
LBKYellowActive local loop back at the HTU-R.

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

The Story Behind "Status Lights"

Infotel Systems . 6008 Hermitage Rd . Richmond, Virginia 23228

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