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Installation
ULAF+ V4.2
2.12.10.1
Installation Manual
Visual signalling of the plug-in unit
When the STU4 is used as a plug-in unit, the front panel is equipped with eleven LEDs
(Fig. 2.162).
Fig. 2.162 Visual signalling of the STU4 plug-in unit
Status
LED
Colour
off
on
PWR
green
no power supply
Power supply o.k.
Alarm
red
no alarm
Urgend alarm 2)
yellow
no alarm
Non-urgent alarm 2)
LOA-Rx
yellow
no alarm
No WAN activity in receive direction
LOA-Tx
yellow
no alarm
No WAN activity in transmit direction
MIR-Tx
yellow
no alarm
WAN capacity in transmit direction at limit
MCS
red
no alarm
on: all paths inoperative
blinking: one or more paths inoperative
1)
SHDSL LOS-U 1
red
no alarm
on: LOS
blinking: LOSW, Training
1)
SHDSL LOS-U 2
red
no alarm
on: LOS
blinking: LOSW, Training
1)
SHDSL LOS-U 3
red
no alarm
on: LOS
blinking: LOSW, Training
Tab. 2.86
A3118-X300-M100-1-76D1
Visual signalling of the STU4 plug-in unit
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