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PM8621 Datasheet(PDF) 15 Page - PMC-Sierra, Inc

Part # PM8621
Description  NSE-8G??Standard Product Data Sheet Preliminary
PDF  184 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM8621 Datasheet(HTML) 15 Page - PMC-Sierra, Inc

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NSE-8G™ Standard Product Data Sheet
Preliminary
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
14
Document ID: PMC-2010850, Issue 1
4
Application Examples
Figure 1 illustrates an OC-48 SONET Ring Add/Drop Multiplexer. The PM5363 TUPP-622
devices align all paths to transport frames in preparation for VT1.5/VT2 granularity switching.
The PM8610 SBI336 Bus Serializer (SBS™) an PM8621 Narrowband Switching Element 8G
(NSE-8G™) devices support VT1.5/VT2 and above switching. The Add and Drop buses are
provided by the SBSs that are not in the SONET Ring path. In this case, they connect to T1 and
E1 mapper ports.
Figure 1 An OC-48 T1/E1 ADM (Individually Drop/Add any T1/E1 in STS-48)
SPECTRA-
2488
4 X
TUPP-
622
4 X
SBS
NSE20G
4 X
SBS
4 X
TUPP-
622
SPECTRA-
2488
SBS
4 X
TEMAP
-84
4 X
OCTAL
-LIU **
** 42 required to terminate
links for all 4 TEMAPS
Figure 2 illustrates another OC-48 SONET Ring ADM. In this application, the network of three
PM5310 TelecomBus Serializers (TBSs) from PMC-Sierra’s CHESS™ chip set add, drop, and
groom traffic at STS-1 granularities. The four TUPP-622 devices align any dropped STS-1s
(paths to transport frames). The virtual tributary (VT) or tributary unit (TU) switching solution is
provided by the SBS-NSE-8G-SBS network below the TUPP-622s. Four SBSs support up to an
STS-48 amount of add/drop traffic.
Figure 2 An OC-48 T1/E1 ADM (Drop/Add up to STS-48 at STS-1 Granularity)
SPECTA-
2488
4 X
SBS
4 X
TUPP-
622
SPECTA-
2488
TBS
TBS
TBS
NSE8G
SBS
SBS
SBS
SBS
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device
SBI device



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