Cisco 7206VXR Installation Guide - Page 87
Straight-Through Cable Pinout, I/O Controller RJ-45 Connection to an End Station or DTE
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Chapter 3 Installing the Cisco 7206 Connecting I/O Controller Cables Table 3-4 RJ-45 Port Pinout Pin Description 1 Receive Data + (RxD+) 2 RxD- 3 Transmit Data + (TxD+) 6 TxD- Note With reference to the RJ-45 pinout in Table 3-4, proper common-mode line terminations should be used for the unused Category 5 UTP cable pairs 4/5 and 7/8. Common-mode line termination reduces electromagnetic interference (EMI). Depending on your I/O controller RJ-45 interface cabling requirements, use the pinouts shown in Figure 3-18 and Figure 3-19 for straight-through and crossover twisted-pair cable connections. Figure 3-18 Straight-Through Cable Pinout, I/O Controller RJ-45 Connection to an End Station or DTE Ethernet port 3 TxD+ 6 TxD- End station 3 RxD+ 6 RxD- H10416 1 RxD+ 2 RxD- 1 TxD+ 2 TxD- Figure 3-19 Crossover Cable Pinout, I/O Controller RJ-45 Connection to an End Station or DTE Ethernet port 3 TxD+ 6 TxD- Hub 3 TxD+ 6 TxD- H10417 1 RxD+ 2 RxD- 1 RxD+ 2 RxD- To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the colored wires inside the ends, as shown in Figure 3-20. OL-5102-02 Cisco 7206 Installation and Configuration Guide 3-19