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TN748 Tone Detectors

by Avaya (63123C, 63123C)

Availability: Yes
$47.00 Sale Price:
Item Total:

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TN748/TN748D Tone Detector

The TN748 is equipped with four touch-tone receivers and two general purpose ton receiver 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
  • One Year Warranty Included with Extended Warranty Options at Low Prices!

Provides dial tone detection for:

  • Automatic Route Selection (ARS)
  • off-premises keyboard dialing
  • off-premises abbreviated dialing

Package Includes

  • TN748/TN748D Tone Detector Card
Insert email for special offers:
Free Free UPS Ground shipping on orders of $500+. Within Continental U.S. (under $500 orders only $9.95)
A portion of each purchase will be donated to The Penrickton Center for Blind Children. For more information, visit
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