Used & Refurbished Avaya 8528 ISDN Phones

Save money and gain a comprehensive, easy-to-use phone system perfect for office settings when you buy refurbished Avaya 8528 ISDN phones online from Black Box Resale.


  • 28 programmable buttons for call appearance or call management features, ISDN terminal
  • 9 fixed feature buttons
  • Large LCD; 2-lines, 24-characters
  • Call logs keep track of 30 recent calls
  • Built-in speakerphone

System Requirements/Compatibility:

  • TN556B BRI ISDN line circuit card
  • Compatible with "custom" ISDN service from local service providers

Product shown in Black.

Product Options
Condition SKU Description Stock Price Quantity
Refurbished XLDEF8528W LU DEF 8528 ISDN VOICE TERMINA Get Quote
Refurbished XLDEF8528B LU DEF 8528 ISDN VOICE TERMINA Get Quote
Refurbished XLDEF8528TW LU DEF 8528T ISDN VOICE TERMIN Get Quote
Refurbished XLDEF8528TB INACTIVE-USE XLDEF8528TADB Get Quote
Refurbished XLDEF8528TADB LU DEF 8528T W/DATA CTI BLK Get Quote