363-206-305
Applications
2-48
Issue 3 June 2000
Basic Narrowband Shelf
Configurations
2
The
SLC
-2000 system can host a DDM-2000 FiberReach Narrowband shelf
(NBS) optical network unit (ONU) through an OC-1 ring using DDM-2000
FiberReach Wideband shelves (WBSs). Figure 2-37 and Figure 2-38 show the
following typical applications:
■
WBS Collocated with the SLC-2000 system (Figure 2-37):
In this
configuration, the collocated WBS is part of an OC-1 ring. This
configuration requires a DDM-2000 OC-3 shelf or a
SLC
-2000 ARM shelf
to be part of the ring and host the WBSs.
■
SLC-2000 J1C265AA-1, L4 ARM Shelf with 26G2-U OLIUs
(Figure 2-38):
In this configuration, the J1C265AA-1, L4 ARM shelf
contains 26G2-U OLIUs in Function Group C as part of the OC-1 ring. The
SLC-2000 system must contain SONET Subsystem Software Release R13
or later and the WBSs in the ring must contain FiberReach Software R3.0
or later. This configuration eliminates the need for a collocated WBS and a
DDM-2000 OC-3 shelf to host the WBSs in the OC-1 ring. In this
configuration, the 28 DS1 pipes are not accessible from the DS1 low-speed
slots in Function Group C of the ARM shelf. However, as shown in
Figure 2-39, DS1 pipes are accessible from any of the WBSs on the ring if
the bandwidth to support them is available on the OC-1 ring.
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