363-206-305
Applications
Issue 3 June 2000
2-17
Stand-Alone OC-1 Ring/Hub Networks 
2
In applications such as campus or other self-contained environments where an 
OC-3 or OC-12 backbone ring is not needed or practical, DDM-2000 FiberReach 
can be deployed in a stand-alone OC-1 ring. This OC-1 ring extension can be 
configured directly from a DDM-2000/
SLC
-2000 shelf with 27-type circuit packs in 
the Main slots. A mix of DS1 and T1 carrier traffic from remote DDM-2000 
FiberReach nodes can be flexibly groomed and dropped at the host to a mix of 
DS1, EC-1, and OC-3 interfaces, as shown in Figure 2-10. Channels can be 
established directly between two DDM-2000 FiberReach remote nodes on the 
same OC-1 ring. This configuration would be very effective for customers within a 
short radius of the wire center or for isolated demand at a distant location where 
there is no appropriate access network yet in place. 
Figure 2-10. DDM-2000 FiberReach Stand-Alone OC-1 Ring 
. . .
OC-1 Ring
DDM-2000
OC-3
. .
DS1
DACS
IV-
2000
EC-1
Wire Center
DS1/T1
tpa 843673/01
DDM-2000
FiberReach
Wideband Shelf
. . .
DS1/T1
DDM-2000
FiberReach
Wideband Shelf
. . .
DS1/T1
DDM-2000
FiberReach
Wideband Shelf