363-206-295
Shelf Descriptions and Configurations
Issue 1 December 1997 3-9
OC-12 STS-1 Path Switched Ring Shelf 3
Figure 3-4 shows a DDM-2000 OC-12 Multiplexer shelf equipped for an STS-1
path switched ring application. One pair of OC-12 OLIU circuit packs are located
in the main B slots. The TSI slots must be equipped with TSI FLEX circuit packs.
The function units can be equipped with triple STS1E, triple DS3, or OC-3 circuit
packs. Figure 3-4 shows a configuration that supports up to three STS-1 and
three DS3 interfaces and two OC-3 optical extensions. The optical extension
OLIUs can provide transport for either three independent STS-1s or one STS-3c.
Dual ring interworking (DRI) capabilities are available on STS-1 paths dropped by
the 3STS1E interfaces.
Figure 3-4. OC-12 STS-1 Path Switched Ring Shelf
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1111
33
2(P) 2(P) 2(P) 2(P) 2(P) 2(P) 2(P)
DCBATS1BA
Main Function units
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7
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A
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TimingTiming
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