Manual de instrucciones de Cisco Systems 78-13342-03

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APPENDIX B
Cabling Specifications
This appendix describes cables and cabling guidelines for the router and contains
the following sections:
• Ethernet Cables
• Ethernet Network Cabling Guidelines
• Console Cable and Adapter
• VIC Cables and Pinouts
• Cables and Pinouts for 2-Port ISDN BRI Card
Note For detailed information about cables used with Cisco WICs and VICs, refer to
the Cisco WAN Interface Cards Hardware Installation Guide that comes with
each of the cards.
Ethernet Cables
This section

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Appendix B Cabling Specifications Ethernet Network Cabling Guidelines Table B-1 Straight-Through Ethernet Cable (RJ-45-to-RJ-45) Pinouts 1 RJ-45 Pin Signal Direction RJ-45 Pin 1 TX+ —> 1 2 TX– —> 2 3 RX+ <— 3 6 RX– <— 6 1. Pins 4, 5, 7, and 8 are not used for signaling but for reducing radiated cable emissions. Ethernet Network Cabling Guidelines Table B-2 describes guidelines for creating Ethernet networks. Numbers might vary, depending on the manufacturer of the network equipment. Table B

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Appendix B Cabling Specifications Console Cable and Adapter Console Cable and Adapter A console cable is provided with your router. Use this cable to connect the router to a PC or terminal. A DB-9-to-DB-25 adapter is also provided for connecting the router to a modem, using the console cable. Table B-3 describes the wiring for the console port and the console cable. This table also includes pinouts for the DB-9-to-DB-25 adapter. Table B-3 Console Cable and Adapter Pinouts Console Console Co

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Appendix B Cabling Specifications VIC Cables and Pinouts • Standard RJ-48S connector and cable to connect E&M VIC ports (brown) to a PBX line. The cable wiring depends on the PBX type and connection. For details, refer to the Cisco WAN Interface Cards Hardware Installation Guide. Figure B-1 shows how to connect the VICs to the network. Figure B-1 Connecting VICs to the Network FXS VIC VIC FXS 1 0 SEE MANUAL BEFORE INSTALLATION FXO VIC VIC FXO 1 0 SEE MANUAL BEFORE INSTALLATION E&M VIC PBX V

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Appendix B Cabling Specifications Cables and Pinouts for 2-Port ISDN BRI Card The E&M VIC pinout depends on the PBX type and connection. Table B-5 lists the pinouts for the E&M connector. Note Pins that are not used should not be connected. Table B-5 E&M Pinouts Pin Signal Description 1 SB –48V signaling battery 2 M-lead Signaling input 3 R Ring, audio input 4 R or R1 Ring, audio input/output, or output 5 T or T1 Tip, audio input/output, or output 6 T Tip, audio input 7 E-lead Signaling out

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Appendix B Cabling Specifications Cables and Pinouts for 2-Port ISDN BRI Card Table B-6 Interface Pin Numbers and Functions NT Interface TE Interface (crossover ISDN BRI NT/TE (straight-through cable) cable) Pin 3/T+ Pin 3/R+ Pin 3/T+ Pin 4/R+ Pin 4/T+ Pin 4/R+ Pin 5/R– Pin 5/T– Pin 5/R– Pin 6/T– Pin 6/R– Pin 6/T– Cisco 1760 Modular Access Router Hardware Installation Guide 78-13342-03 B-6