Nortel Networks OPTera Metro 3500 - Manual (Page 266)

3-38 Hardware feature descriptions
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 3-21
Left OAM (LOAM) (NTN451MA, NTN451MH)
EX0790p
Left interface (LIF)
(NTN451BA, NTN451BH)
The LIF is inserted in slot 1a and provides a connection for the LOAM. The
LIF also provides the inventory connection for the power modules.
See Table 3-3 on page 3-6 for operational temperature ranges.
See Figure 3-22 for the details of the LIF. The following table provides a list
of the LIF LEDs.
LED Description
Power Shelf is receiving power when the LED is lit.
Critical A Critical alarm condition exists for one of the circuit packs on the shelf.
Major A Major alarm condition exists for one of the circuit packs on the shelf.
Minor A Minor alarm condition exists for one of the circuit packs on the shelf.
Remote An alarm condition exists on one of the other network elements in the system.
ACO The ACO button has been pressed and an audible alarm can be suppressed. This
LED is also used for the Lamp Test.
RS-232
LOAM I/O pins
Cable stress relief
ILAN 2
ILAN 1
COLAN
Fan alarms
Unit mount screw
Unit mount screw
Hinged screw
Hinged screw