Building an RJ-45 Crossover Cable

This page provides pin out information for a crossover cable for the following:

• Connecting two machines (only) via Ethernet without the use of a hub or switch
• Connecting two CSU/DSU's back to back for testing Wide Area Network (WAN) configurations.

Cable Pin out:

    RJ-45        RJ-45
  Connector    Connector
  ----------------------
    pin 1   ->   pin 3
    pin 2   ->   pin 6
    pin 3   ->   pin 1
    pin 6   ->   pin 2