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Cisco ONS 15200 Product Description
78-13766-01
Chapter3 Product Hardware
Physical Layout
Figure 3-4 Configuration of the ONS 15252 Multichannel Unit
The lower portion of the ONS 15252 MCU is referred to as the passive optical shelf. The passive optical
shelf has an A side and B side. The A side of the ONS 15252 MCU is located on the left side of the
passive optical shelf, as seen from the front. The A-side LM contains one line IN port (FC), one line
OUT port (FC), and two line-monitoring ports (SC). The line-monitoring ports make it possible to
monitor the A-side incoming and outgoing DWDM optical signals.
The B side of the ONS 15252 MCU is located on the right side of the passive optical shelf, as seen from
the front. The B-side LM contains one line IN port (FC), one line OUT port (FC), and two
line-monitoring ports (SC). The line-monitoring ports make it possible to monitor the B-side incoming
and outgoing DWDM optical signals. The passive optical shelf also contains the A-side and B-side
HFMs and TMs, BMs, CMXs, or CMYs in various combinations. Figure 3-5 shows the typical
arrangement of the modules.
NCB - Network Controller Board
CLIP - Client Line Interface Port
NAM - Network Adaptation Module
CIM - Communications Interface Module
LM - Line Module
HFM - Hub Filter Module
DFM - Dummy Filter Module
BM - Bridge Module
B - Side
A - Side
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