Specifications

• 28AWG, silver satin jacket
  
• Terminated with RJ11 (6P4C) plug on both end
  
• 4 conductor reverse wiring
  
• pin1 -- pin4 (black)
  
• pin2 -- pin3 (red)
  
• pin3 -- pin2 (green)
  
• pin4 -- pin1 (yellow)
  
• Reverse wiring is generally used for residential and business voice/phone applications.