1-20
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 1      Shelf Assembly Hardware
1.5    Typical DWDM Rack Layouts
Figure 1-17 Typical DWDM Equipment Layout in an ONS 15454 ANSI Rack
If you are installing a patch-panel or fiber-storage tray below the ONS 15454 shelf, you must install the 
air ramp between the shelf and patch-panel tray/fiber-management tray, or leave one rack unit (RU) 
space open.
240766
2000 mm (78.74 in.) internal clearance
By default,
2 RU patch panels
are used for
64 and 80-channels
FUSE & ALARM PANEL
FIBER STORAGE
FIBER STORAGE
FIBER STORAGE
PATCH PANEL
PATCH PANEL
DCU
DCU
AIR RAMP
FIBER STORAGE
ANSI
SHELF
ANSI 23 in. (584.2 mm) or 19 in. (482.6 mm)
ANSI
SHELF
ANSI
SHELF