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Cisco ONS 15454 DWDM Reference Manual, R8.5
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Chapter 1      Shelf Assembly Hardware
1.12.3    Fiber Management Using the Y-Cable Module Tray
Figure 1-46 shows a four-degree patch-panel tray.
Figure 1-46 Four-Degree Patch-Panel Tray
Figure 1-47 shows an eight-degree patch-panel tray.
Figure 1-47 Eight-Degree Patch-Panel Tray
1.12.3 Fiber Management Using the Y-Cable Module Tray
The optional Y-cable module tray manages the connections between TXP cards by splitting patchcords 
into single connections. The patch-panel tray consists of a metal shelf, a pull-out drawer, and up to eight 
Y-cable modules.