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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. Features 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
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🇺🇸 Ship from USA · On Agora since 2025
$38.88