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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 2 General Troubleshooting
Fiber and Cabling
Figure 2-18 A cross-over cable layout
Note Odd-numbered pins always connect to a white wire with a colored stripe.
2.5.3 Optical Card Transmit and Receive Levels
Each STM-N card has a transmit and receive connector on its faceplate.
7 white/brown 4 7
8brown 4 8
Table 2-24 Straight-through cable pinout (continued)
Pin Color Pair Name Pin
Table 2-25 Cross-over cable pinout
Pin Color Pair Name Pin
1 white/orange 2 Transmit Data + 3
2orange 2Transmit Data - 6
3 white/green 3 Receive Data + 1
4blue 1 4
5 white/blue 1 5
6green 3Receive Data - 2
7 white/brown 4 7
8brown 4 8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
55416
Table 2-26 Optical Card Transmit and Receive Levels
Optical card Rx Tx
4/STM1 LH 1310 -8 to -28 dBm -8 to -15 dBm
STM4 SH 1310 -8 to -28 dBm -8 to -15 dBm
STM4 LH 1310 -8 to -28 dBm +2 to -3 dBm
STM4 LH 1550 -8 to -28 dBm +2 to -3 dBm
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