3Com 3C13886 Installation Guide - Page 63
I. Ethernet cable, II. Making Ethernet cables, Table 3-11, Description
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3Com Router Module Guide Chapter 3 Multifunctional Interface Modules Figure 3-22 ROUTER 2-PORT 10/100 MIM panel The following table describes the LEDs on the /ROUTER 2-PORT 10/100 MIM panel. Table 3-11 LEDs on the ROUTER 2-PORT 10/100 MIM panel LED Description LINK OFF means no link is present; ON means a link is present. ACTIVE OFF means no data is being transmitted or received on the interface and blinking means data is being transmitted and/or received. 3.5.4 Interface Cable I. Ethernet cable As shown in the following figure, the Ethernet cables for FIC-FE cards are category-5 twisted pairs with RJ-45 connectors. Pins 1 and 2 of the interface are used for transmitting data, and pins 3 and 6 are used for receiving data. Figure 3-23 Ethernet cable II. Making Ethernet cables You can use category 5 twisted-pair cables to make Ethernet cables. A category 5 twisted-pair cable is composed of eight wires that are identified and grouped by colors of the outer insulator. Usually a solid color wire and a white/solid color wire are organized in pairs. But sometimes, wires are also paired by color dots. Ethernet cables fit into two categories: straight-through and crossover. z Straight-through cable: The wires are crimped in the RJ-45 connectors at both ends in the same order. The cable is used for connecting a terminal device (for 3-19