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Applications
Issue 3 June 2000
2-5
OC-3 Path Switched Ring
2
A DDM-2000 FiberReach can be equipped with OC-3 optics. This option offers a
cost effective solution at locations where the dropped traffic is primarily VT1.5
based and is accessed from any one of the 3 STS-1s. DDM-2000 OC-3
multiplexers can be mixed in the same OC-3 ring. The OC-3 multiplexers can be
used at sites requiring DS3 and other higher bandwidth STS path-switched traffic,
while the FiberReach multiplexer is used at sites requiring VT path access for
DS1, T1, etc. Figure 2-2 shows an OC-3 ring that includes both OC-3 and
FiberReach multiplexers.
Starting with FiberReach Release 3.1, FiberReach shelves can be used at sites
requiring DS3 services (STS-1 path access for DS3).
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