Hitachi GR2000 - Manual (Page 161)

The NAOC12-2S and NAOC12-2M physically appear as Figure 3-51.
Figure 3-51 NAOC12-2S and NAOC12-2M Front Panel View
Switch and LED indication
Table 3-77 NWOC12-2S/NWOC12-2M switch and function of LED indications
Name LED: Color Status Content
STATUS LED: Green/
Yellow/ Red Shows the operating
condition of NIF. Green: Operable operation
Yellow: Blocking and the board replaceable state/
lamp tested.
FA
C
IL
ITY
LO
O
PBA
C
K
ATM OC-12/STM-
NA
O
C
12-
2S
LINE0
ST
AT
U
S T R
AP
ST
R
Tx
LINE1
T R
ATM OC-12/STM-4(MMF)
or
NAOC12-2