363-206-305
Applications
2-26
Issue 3 June 2000
Figure 2-17. OC-3 Ring Mixed Application
29-Type Optical Line Interface (29G-U/29H-U)
2
This section describes applications in which the FiberReach multiplexer is
equipped with the 29-type OC-12 OLIUs in the Main slots.
Circuit Pack Overview
2
The 29-type OLIU is used in the Main slots of the DDM-2000 FiberReach Shelf in
a unidirectional path protection switched OC-12 ring configuration.
The primary functions of the 29-type OLIU are to multiplex up to 7 VT-G signals
and 3 STS-1 signals in the transmit direction; to demultiplex an
OC-12 signal into 3 STS-1 signals and up to 7 VT-G signals in the receive
direction; to provide for cross-connections among the 3 STS-1s and all VT1.5
signals that may be embedded within any of the STS-1s and provide system clock
and frame.
DDM-2000
OC-3
DDM-2000
OC-3
SLC-2000
OC-3
22F or G type OLIU
22F or G type OLIU
22F or G type OLIU
DS1
Central Office
tpa 852315/01
DDM-2000
FiberReach
DS1/T1 or
HDSL
OC-3 Path Switched Ring
28G type OLIU
DS1 or HDSL
DS3
EC-1
OC-3
DS1
DS3
EC-1
OC-1
OC-3
R11.0
R11.0
R2.2
R11.0
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