| TN748D Tone Detector |
 TN748D Tone Detector Like New: Quantity This product is eligible for 2 Year Platinum Protection! TN748D Features Provides four touch-tone receivers and two general purpose ton receivers to detect call progress tones, modem answer-back times, transmission test tones, and noise Provides dial tone detection required for the Automatic Route Selection (ARS) feature, off-premises (out-of-building) keyboard dialing, and off-premises abbreviated dialing Replaced by TN2182B Tone-Clock, Tone Detector, and Call Classifier Price: 39.00 |