Juniper ACX5448-D - Page 73

Table 33 on page 75 describes the signals on each fiber. Table 34 on page 75 shows the pin to pin
connections for proper polarity.
Table 33: QSFP+ MPO Cable Signals
SignalFiber
Tx0 (Transmit)1
Tx1 (Transmit)2
Tx2 (Transmit)3
Tx3 (Transmit)4
Unused5
Unused6
Unused7
Unused8
Rx3 (Receive)9
Rx2 (Receive)10
Rx1 (Receive)11
Rx0 (Receive)12
Table 34: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts
PinPin
121
112
103
94
85
76
75