Avaya/Definity Circuit Packs TN429 - TN748

Avaya Definity TN748D Tone Dectector Circuit Pack

  • Like New: $38.88
Availability: In Stock

Definity TN748/TN748D Tone Detector

The TN748 is equipped with four touch-tone receivers and two general purpose tone receivers to detect call progress tones, modem answer-back times, transmission test tones, and noise.


  • Four touch-tone receivers
  • Two general purpose ton receivers
  • Replaced by TN2182B Tone-Clock, Tone Detector, and Call Classifier
  • Provides dial tone detection for:
    • Automatic Route Selection (ARS)
    • Off-premises keyboard dialing
    • Off-premises abbreviated dialing

Package Includes
  • TN748/TN748D Tone Detector Card

Product Reviews from Verified Customers