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- 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
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| TN748D Tone Detector |
| 63123D |
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199.00 |
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120.00 |
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Definity Systems
