Figure 1-26: Straight-Through Cable - Cisco ONS 15454 Series Reference Manual

ONS_15454_Reference_Manual_R8.5.x_--_Shelf_and_Backplane_Hardware
Figure 1-26 shows the straight-through Ethernet cable schematic. Use a straight-through cable when
connecting to a router or a PC.

Figure 1-26: Straight-Through Cable

Figure 1.27 shows the crossover Ethernet cable schematic. Use a crossover cable when connecting to a
switch or hub.
Figure 1-27: Crossover Cable
Cable Routing and Management
The ONS 15454 cable management facilities include the following:
• A cable-routing channel (behind the fold-down door) that runs the width of the shelf assembly
(Figure 1-28)
• Plastic horseshoe-shaped fiber guides at each side opening of the cable-routing channel that ensure
the proper bend radius is maintained in the fibers (Figure 1-29)
Note: You can remove the fiber guide if necessary to create a larger opening (if you need to route CAT-5
Ethernet cables out the side, for example). To remove the fiber guide, take out the three screws that anchor it
to the side of the shelf assembly.
• A fold-down door that provides access to the cable-management tray
• Cable tie-wrap facilities on EIAs that secure cables to the cover panel
• A cable routing channel that enables you to route cables out either side
• Jumper slack storage reels (2) on each side panel that reduce the amount of slack in cables that are
connected to other devices
Note: To remove the jumper slack storage reels, take out the screw in the center of each reel.
• Optional tie-down bar
Figure 1-28 shows the cable management facilities that you can access through the fold-down front door,
including the cable-routing channel and cable-routing channel posts.
Figure 1-25: 100BaseT Connector Pins 40