Network cables

The ESM devices all use copper cable connections. They use either straight-through or crossover copper RJ-45 male cables.

  • To connect an ESM device RJ-45 port to DCE, use a straight-through cable.
  • To connect to a DTE, use a crossover cable.

To distinguish between a straight-through and crossover cable, hold the two ends of the cable as shown:

  • On a straight-through cable, the colored wires are the same sequence at both ends.
  • On a crossover cable, the first (far left) colored wire at one end is the same color as the third wire at the other end of the cable.