363-206-305
Applications
Issue 3 June 2000
2-15
Dual-homing applications can also be upgraded to an OC-12 backbone ring as
shown in Figure 2-8. As with the single-homing application, the DDM-2000 OC-3
host system supplies the VT1.5 grooming necessary for optimum backbone
utilization.
Figure 2-8. DDM-2000 FiberReach Ring Dual Homing to a DDM-2000 OC-12 Ring in a
Dual Wire Center Application
DDM-2000
OC-3
OC-12
DDM-2000
OC-3
IS-3
IS-3
Customer Locations
IS-3
Access
System
DACS IV-
2000
EC-1
FT-2000
EC-1
Wire Center #2
DDM-2000
OC-3
IS-3
DACS IV-
2000
EC-1
FT-2000
EC-1
Wire Center #1
DDM-2000
OC-12
OC-1
OC-48
Interoffice
Ring
DDM-2000
OC-12
DDM-2000
OC-12
RT Sites
DDM-2000
OC-12
DS1/T1
DDM-2000
FiberReach
Wideband Shelf
DS1/T1
DDM-2000
FiberReach
Wideband Shelf
SLC
-2000
R
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