352
3300 ICP Technician’s Handbook
BRI NSU
L0 and L1
(on front and rear)
right side - solid red Error (no physical layer is present
or network/line side jumper is not
set correctly)
right side - OFF No error
left side - solid
green
AB signaling established
left side - flashing
green
Layer 1 established
left side - OFF No link
right side - yellow
with left side -
flashing green
Alarm indication from far end
right side - yellow
with left side - OFF
Blue alarm from card - normal
during link startup
yellow and green
alternating between
L0 / L1
Downloading (15 - 25 minutes)
yellow alternating
between L0 and L1
Decompressing and copying files
(2 - 4 minutes)
Note: When the LEDs are alternating, NSU is powering up. Do NOT interrupt or
you might corrupt the card software.
Figure 155: BRI NSU LEDs
Table 87: R2 NSU LED States (continued)
LED State Meaning
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