T1 Access Unit - Paradyne 9120 User Manual

Maintenance and Troubleshooting

T1 Access Unit

5-2
Label Indication
OK Power and
Operational
Status
ALM Operational
Alarm ( Fail )
June 1997
Color What It Means
Green ON – Access unit has power and is
operational.
OFF – Access unit is in a power-up self-test,
or there is a failure.
Blinking ON and OFF ( Rate: 1 Hz ) –
Software is being downloaded.
Red ON – Access unit has just been reset, or an
error or fault has been detected.
Error/fault/alarm conditions:
Out of Frame ( OOF )
Loss of Signal (LOS)
Alarm Indication Signal (AIS)
Exceeded Error Rate (EER)
Yellow Alarm Signal
Device Fail
DBM Card Failed
Memory Failed
T1 Failed
CPU Failed
ISDN Network Failed
LMI Down
DLCI Down
Network Communication Link Down
CTS Down to device
DTR Down to device
Download Failed
Primary or Secondary Clock Failed
OFF – No failures have been detected.
9121-A2-GB20-00