![]() This cable can be used to connect two DDS CSU/DSU (i.e., DSU) products in a back-to-back configuration. ![]() This pinout is the same for both a RJ-45 plug and RJ-45 jack.įigure 5 shows the pinout for building a DDS crossover cable. This cable can be used to connect two T1 CSU/DSU (i.e.,TSU) products in a back-to-back configuration.įigure 4 shows the pinout for building a DDS loopback adapter. ![]() This pinout is the same for both a RJ-45 plug and RJ-45 jack.įigure 3 shows the pinout for building a T1 crossover cable. Follow below pin connectivity Pin 1 <-> Pin 3.There are eight pins total in a RJ-45 connector.įigure 2 shows the pinout for building a T1 loopback adapter. Remove the jacket of CAT5/6 Cable and cut out one pair (2 Wires) of approx. It doesn’t matter whether the cable you buy follows EIA-568A or EIA-568B because in both cases, the same color wire connects to the same pin at either end. The straight through cable is configured as described above. This document shows the necessary pinout for building them.įigure 1 shows a how to orient a standard RJ-45 to RJ-45 silver satin cable to determine pin 1. The cable that comes in the box with your router is a straight through cable it is the most common format for network cables. Loopback adapters and crossover cables are useful tools for troubleshooting both DDS & T1 circuits. Loopback Adapters and Crossover Cables for T1 and DDS Circuits
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