RJ-45 Crossover Cable

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

  • Connecting two machines (only) via 10baseT Ethernet without the use of a hub. 
  • Connecting two CSU/DSU's back to back for testing Wide Area Network (WAN) configuration. 

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