Used & Refurbished Avaya 6400 Single Line Phones

Get the perfect, simple to use, basic phone system when you buy used Avaya 6400 single line phones online at a ridiculous cost-savings.


  • Single line digital telephone
  • Fixed buttons for Conference, Transfer, Hold, Redial, Speaker (listen only) and Feature
  • Group listening only

System Requirements/Compatibility:

  • DEFINITY Family Release 6.1 or higher
  • One of the following 2-wire circuit cards
  • 16-port digital station circuit card (TN2181)
  • 24-port digital station circuit card (TN2224)

Product shown in Gray.

Product Options
Condition SKU Description Stock Price Quantity
Refurbished XLDEF6402G LU DEF 6402 NON-DISP GRY Get Quote
Refurbished XLDEF6402W LU DEF 6402 NON-DISP WH Get Quote
Advance Replacement ALDEF6402G LU DEF 6402 NON-DISP GRY Get Quote