363-206-305
Applications
Issue 3 June 2000
2-39
DDM-2000 FiberReach Service Applications
Using the 28G-Type OLIU (Release 3.1, TARP)
2
The following figures show service applications of the DDM-2000 FiberReach
Multiplexer using the 28G-type OLIU. In Figure 2-29, the FiberReach multiplexer is
a network element on an OC-3 path switched ring with a DDM-2000 OC-3 host
shelf in the Central Office. The host shelf provides timing to other NEs on the ring
and serves as a gateway NE to a TL1 based operation support system. Fiber
connections are between main OLIUs. The FiberReach shelf provides a DS3
interface and up to 28 DS1 service interfaces, or a mix of DS1, T1, and HDSL.
Figure 2-30, Figure 2-31 and Figure 2-32 are example applications in which the
FiberReach Multiplexer is a node in an OC-3 ring carried on an OC-12 or OC-48
ring.
Figure 2-29. OC-3 Ring Mixed Application (Release 3.1 or Later)
DDM-2000
OC-3
DDM-2000
OC-3
SLC-2000
OC-3
22F or G type OLIU
22F or G type OLIU22F or G type OLIU
DS1
Central Office
tpa 852419/01
DDM-2000
FiberReach
OC-3 Path Switched Ring
28G type OLIU
R13.0
R3.1
DS1 or HDSL
DS3
EC-1
OC-3
DS1
DS3
EC-1
OC-1
OC-3
R13.0
* Supported by
3.1 and later
DS1/T1 or
HDSL
DS3*
DS3* Data
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