![]() ![]() 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. In practice, it does not matter if non-crossover Ethernet cables are wired as T568A or T568B, just so long as both ends follow the same wiring format. and fixes are made available for free download from the Download page in the. 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. The highly flexible universal network connector supports RS232, X.21. 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. Ethernet crossover cable diagram The receive data pair (the two wires designated RXD2) must be a twisted pair. For a trouble-free operation of any electrical system, particularly those that. ![]() The transmit data pair (designated TD) must be a twisted pair. The negative effects of cable voltage drop. There are eight pins total in a RJ-45 connector.įigure 2 shows the pinout for building a T1 loopback adapter. Ethernet Crossover (MDI-X) cable diagram: The receive data pair (the two wires designated RD) must be a twisted pair. The difference is in the pin-out, which pins in the connector connect to. 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 same type of cable is used for a crossover cable as for straight through. 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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