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Status/Alarm Mode
The FCD enters Status/Alarm mode after power up or a reset. It displays
and then alternately displays loop margin for each HDSL loop, any active alarm condition, and
general status conditions.
The HDSL loop margin is displayed for each loop that is active with the messages
where
is the HDSL loop margin for that loop. The loop margin is held on the display
2=xx
xx
for 2 seconds. The loop margin will not be displayed if that loop is in start-up or LOSx
condition.
The Status/Alarm mode also displays alarms. If any of the conditions listed in
present, the messages for those conditions will be displayed for 2 seconds each after the loop
margins.
Message
HER1
HER2
LERR
RERR
LBPV
RBPV
LOS1/LOS2
LLOS
RLOS
ARM
Display Off Mode
The FCD enters Display Off Mode from Status Mode after 5 minutes with no activity on the
front panel pushbuttons. While in this mode, the FCD is completely off.
The FCD will return to Status Mode under the following conditions:
• When either
MODE
released.
• When a message other than loop margin is to be displayed.
61247003L6-5A
Table 8. Status/Alarm Display (STAT)
CRC error detected on HDSL Loop 1
CRC error detected on HDSL Loop 2
Frame bit error (SF Mode), or CRC error (ESF Mode) detected locally at DSX-1
of the HTU-C
Frame bit error (SF Mode), or CRC error (ESF Mode) detected remotely at DS-1
of the HTU-R
Bipolar Violation (BPV) detected locally at DSX-1 of the HTU-C
BPV detected remotely at DS-1 of the HTU-R
No synchronization of HTU-C and HTU-R on Loop 1/Loop 2
DSX signal is absent from the network interface or is of a format which does
not match the provisioning of the HDSL circuit
DS1 signal is absent from the network interface or is of a format which does
not match the provisioning of the HDSL circuit
The loopback arming sequence has been detected
or
is pressed. FCD starts again when the pushbutton is
SELECT
Condition
Front Panel Operation
for 5 seconds
ADTRAN
and
1=xx
Table 8
are
13
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Troubleshooting
