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2
Board
Type
2.1
With the cross-connect matrix unit as core, the OptiX OSN 3500 consists of interface
unit, SDH cross-connect matrix unit, synchronous timing unit, SCC unit, overhead
processing unit and auxiliary interface unit. The system architecture of the OptiX OSN
3500 is shown in Figure 2-1, and its functions and subordinate boards of respective
units are shown in Table 2-1.
SDH interface
unit (STM-1/4/
λ
16/64)
West
synchronous timing unit (higher-order/
SCC unit
and
overhead
processing
unit
Figure 2-1 System architecture of OptiX OSN 3500
SDH cross-connect matrix and
lower-order: 35G/5G and 60G/5G)
PDH
Ethernet
interface
interface
unit (E1/
unti (10/
T1/E3/
100/
T3/E4)
1000M)
OptiX OSN 3500 TM - SD
SDH interface
unit (STM-1/4/
λ
16/64)
East
Auxiliary
interface
unit
2-1
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