Table 5. Led Indicator Functionality - ADTRAN Express 6500 Series Installation And Maintenance Practice

SHDSL 2-Wire/4-Wire Line Terminating Unit (LTU) Installation and Maintenance Practice
Label Status
Off
PWR
Green
Off
SHDSL
Green
Yellow
Red
Off
G.703
Green
Yellow
Red
Off
NTU PR
Green
Off
PRGM
Green
Yellow
Red
Off
LLOOP
Yellow
Red
Off
RLOOP
Yellow
Red
Off
BERT
Green
Yellow
Red
Off
SPN PWR
Green
Off
DC PWR
Green
Off
PRGM
Green
Yellow
Red
1. Minor SHDSL port alarms: CRC errors, Loop Attenuation Threshold Alarm, SNR Margin Threshold Alarm,
Segment Anomaly, and any ES, SES, UAS, CVC, and LOSWS 15-Minute Threshold Alarm
2. Major SHDSL port alarms: LOS, LOSW, or Segment Defect
3. Minor G.703 port alarms: Rx RAI, Frame Slip, CRC-4 errors, LBER, and any ES, SES, UAS, and CVC 15-Minute
Threshold Alarm
4. Major G.703 port alarms: LOS, LOF, LOMF, Rx AIS, or HBER
8

Table 5. LED Indicator Functionality

Description
Unit is not powered
Unit is powered
Unit is powered off
Port is trained; no active alarms
Port is trained with a minor active alarm
Port is attempting to or is trained with a major alarm
Port is not active
Active Port with no active alarm
Active Port with a minor alarm
Active Port with a major alarm
NTU is not present
NTU is present
Firmware is not being programmed
Local unit firmware is being locally programmed
Remote unit firmware is being locally programmed
Local unit firmware is being remotely programmed
Local Loop is not active
Active Local Loopback on the selected port
Active Local Loop on one or more ports or services (when no port is selected)
Remote Loop is not active
Active Remote Loopback on the selected port (when determined through
established EOC)
Active Remote Loop on one or more ports or services (when no port is
selected)
BERT is not active
Active BERT and the test pattern detector is synchronized with no received
bit errors
Active BERT and one or more test pattern bit errors have been received
Active BERT but the test pattern detector is not synchronized
Unit is not SHDSL span powered
Unit is SHDSL span powered
Unit is not DC powered
Unit is DC powered
Firmware is not being programmed
Local unit firmware is being locally programmed
Remote unit firmware is being locally programmed
Local unit firmware is being remotely programmed
(1)
(3)
(4)
(2)
61230011L1-5B