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Shelf Descriptions and Configurations
3-16
Issue 3 June 2000
Shelf Configuration
3
This section summarizes descriptive information used with applications
information to plan procurement and deployment of the DDM-2000 FiberReach
Multiplexers. There are several considerations that should be remembered when
planning the DDM-2000 FiberReach Multiplexers' role in the network. Projected
customer requirements will determine the initial capacity needed, as well as
evolution to higher capacities. The advanced networking capabilities of the DDM-
2000 FiberReach Multiplexers offer many economic and planning benefits, and
certain guidelines should be followed to maximize these benefits. Physical
installation considerations will be guided by the installation location (central office,
uncontrolled, or customer locations). Initial network configuration will determine
synchronization requirements. Synchronization should be planned on a network
basis, considering items like topology, reliability, internetwork connectivity, and
service evolution.
The DDM-2000 FiberReach Multiplexer provides multiplexing and transport for
one STS-1 signal optic signal when equipped with OC-1 optics or for up to 3 STS-
1s when equipped with OC-3 optics or multiplex 4 STS-1s and transport up to 12
STS-1s when equipped with OC-12 optics in the Main slots in a ring configuration.
This capacity may be utilized in many combinations of low-speed inputs. The
following shelf configurations represent some examples of the low-speed input
combinations.
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