Cisco 6509 Installation Guide - Page 297

Appendix B Transceivers, Module Connectors, and Cable Specifications Cables Table B-15 1000BASE-T Crossover Cable Pinout (MDI-X) Side 1 Pin (Signal) 1 (TP0+) 2 (TP0-) 3 (TP1+) 6 (TP1-) 4 (TP2+) 5 (TP2-) 7 (TP3+) 8 (TP3-) Side 2 Pin (Signal) 3 (TP1+) 6 (TP1-) 1 (TP0+) 2 (TP1-) 7 (TP3+) 8 (TP3-) 4 (TP2+) 5 (TP2-) Figure B-17 Twisted-Pair Crossover 1000BASE-T Cable Schematic Switch 1 TPO+ 2 TPO3 TP1+ 6 TP1- Switch 1 TP0+ 2 TP03 TP1+ 6 TP1- 4 TP2+ 5 TP27 TP3+ 8 TP3- 4 TP2+ 5 TP27 TP3+ 8 TP3- 65274 Note Power over Ethernet (PoE), uses pairs 2 and 3 (pins 1, 2, 3, and 6) in a four-pair UTP cable to transmit power from the switch to a powered device. This method of supplying power is sometimes called "phantom power" because the PoE power travels over the same pairs of wires used to transmit the Ethernet signals. The PoE voltage is completely transparent to the Ethernet signals and does not interfere with their operation. Catalyst 6500 series switches come with an accessory kit that contains the cable and adapters that you will need to connect a console (an ASCII terminal or PC running terminal emulation software) or modem to the console port. The accessory kit includes these items: • RJ-45-to-RJ-45 rollover cable • RJ-45-to-DB-9 female DTE adapter (labeled "Terminal") • RJ-45-to-DB-25 female DTE adapter (labeled "Terminal") • RJ-45-to-DB-25 male DCE adapter (labeled "Modem") OL-5781-04 Catalyst 6500 Series Switches Installation Guide B-25