Nortel Networks OPTera Metro 3500 - Manual (Page 308)

3-80 Hardware feature descriptions
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
OC-3x4 optical interface circuit pack
(NTN441AA, AC)
The OC-3x4 optical interface circuit pack provides the same functionality as
the OC-3 optical interface circuit pack, but has four optical lines. The OC-3x4
optical interface circuit pack can provide add/drop capability for four OC-3
tributary interfaces.
Note 1: The DS1 service module (DSM) connects to the OPTera Metro
3500 network element through the ports on a host OC-3 or OC-3x4 circuit
pack.
Note 2: The NTN441AA version of the OC-3x4 circuit pack is shipped
from the factory with eight SC connectors located on a sliding panel and
accessed from the front of the circuit pack.
Note 3: The NTN441AC version of the OC-3x4 circuit pack is shipped
from the factory with four duplex LC connectors located on the front of the
circuit pack.
The OC-3x4 optical interface circuit pack comes equipped with SC
(NTN441AA) or LC (NTN441AC) type connectors that are located on a
sliding panel and accessed from the front of the circuit pack. Pull the sliding
panel out from the circuit pack just enough to complete the work required. The
connectors are on the panel behind the small clear plastic doors found on each
side of the panel. The clear plastic doors are labeled to ensure proper
connection of the fibers. After you connect the fiber, gently push the sliding
panel back into the circuit pack.
Multimode Interworking
The NTN441AC version of the OC-3x4 circuit pack supports multimode
interworking for short distances (intra-office) if the following condition are
met:
• The multimode fiber (MMF) complies with the characteristics as described
in ANSI T1.416.01-1999:
Parameters Value
Core diameter 62.5 µm
Cladding diameter 125
µm
Attenuation @ 1300 nm 1.0 dB/km (max)
Modal bandwidth @ 1300 nm 500Mhz-km (min)
Dispersion slope 0.093ps/nm
2
-km
Dispersion minimum 1365 nm (max)