RJ-45 Crossover Cable

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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.

Ethernet Crossover Pin Out:

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

T1 Crossover Pin Out:

   RJ-45        RJ-45
 Connector    Connector
 ----------------------
   pin 1   ->   pin 4
   pin 2   ->   pin 5
   pin 4   ->   pin 1
   pin 5   ->   pin 2
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