Crimp Replacement Cat-5 Cables - Cisco ONS 15600 SDH Troubleshooting Manual

1.9.2 Faulty Fiber-Optic Connections
Tip To prevent overloading the receiver, use an attenuator on the fiber between the STM-N port transmitter
and the receiver. Place the attenuator on the receive transmitter of the STM-N ports. Refer to the
attenuator documentation for specific instructions.

Crimp Replacement CAT-5 Cables

You can crimp your own CAT-5 cables for use with the ONS 15600 SDH. To connect the CAP of an
ONS 15600 SDH directly to your laptop/PC or a router, use a straight-through CAT-5 cable. To connect
the CAP of an ONS 15600 SDH to a hub or a LAN switch, use a cross-over CAT-5 cable. To connect an
ONS 15600 SDH active TSC card directly to your laptop/PC, you might use either a straight-through or
cross-over CAT-5 cable because the RJ-45 port on the faceplate is autosensing.
Use a straight-through or cross-over cable to connect to the backplane Ethernet connections of an
ONS 15600 SDH. Use a straight-through cable to connect to the faceplate connector of the
ONS 15600 SDH TSC card. Use CAT-5 cable RJ-45 T-568B, Color Code (100 Mbps), and a crimping
tool.
Figure 1-20
End view of RJ-45 plug
Figure 1-21
Figure 1-21
Table 1-25
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
1-72
Figure 1-20 shows the layout of an RJ-45 connector.
RJ-45 Pin Numbers
8 7 6 5 4 3 2 1
shows the layout of a straight-through cable.
Straight-Through Cable Layout
1
2
3
4
5
6
7
8
shows the straight-through cable pinout.
1 2 3 4 5 6 7 8
Looking into an RJ-45 jack
1
2
3
4
5
6
7
8
Chapter 1 General Troubleshooting
July 2010