Router Installation Guide

Chapter 3 Installing the Cisco XR 12406 Router
Connecting the PRP to an Ethernet Network
3-22
Cisco XR 12406 Router Installation Guide
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Warning The ports labeled Ethernet, 10BASE-T, Token Ring, Console, and AUX are safety
extra-low voltage (SELV) circuits. SELV circuits should only be connected to
other SELV circuits. Because the BRI circuits are treated like telephone
network voltage, avoid connecting the SELV circuit to the telephone network
voltage (TNV) circuits.
Depending on your RJ-45 cabling requirements, use the connector pinouts shown
in Figure 3-12 or Figure 3-13.
Figure 3-12 Straight-Through Cable Pinout (Connecting MDI Ethernet Port
to MDI-X Wiring)
Table 3-3 PRP RJ-45 Ethernet Receptacle Pinout
Ethernet Port Pin Signal Description
1 TxD+ Transmit data +
2 TxD– Transmit data –
3 RxD+ Receive data +
4 Termination Network No connection
5 Termination Network No connection
6 RxD– Receive data –
7 Termination Network No connection
8 Termination Network No connection
MDI-X wiringMDI wiring
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 RxD+
2 RxD–
3 TxD+
6 TxD–
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