363-206-305
Applications
2-16  
Issue 3 June 2000
Single Homing to Linear DDM-2000 OC-3 
Networks 
2
In business applications where the DDM-2000 OC-3 host is a node on a linear 
topology, two single-homed OC-1 ring extensions can be provided to multiple 
DDM-2000 FiberReach Multiplexers (see Figure 2-9). In this tapered linear 
application configuration, function slot "C" of the DDM-2000 OC-3 host is used for 
incoming traffic, and the "A" and "B" slots are used for downstream traffic or local 
terminations. The host DDM-2000 OC-3 Multiplexer must be using software 
Release 9.0 or later. The other DDM-2000 OC-3 Multiplexers in the linear 
application must be using Release 8.0 software. 
Figure 2-9. Single-Homed OC-1 Ring to a DDM-2000 OC-3 Linear Application 
R
OC-3
OC-3
OC-3
OC-1
OC-1
R8.0
R8.0
R9.0
DDM-2000/
MAIN 1 MAIN 2
DDM-2000/
SLC
-2000
DDM-2000/
SLC
-2000
DDM-2000
FiberReach
Wideband Shelf
DDM-2000
FiberReach
Wideband Shelf
Access System Access System
R8.0
DDM-2000/
SLC
-2000
Access System