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Definity TN756 Tone Detector (TN756) Provides 4 DTMF receivers and 2 general-purpose tone receivers to
detect call progress tones, modem answer-back tones, transmission test
tones, and noise. Provides dial tone detection required for the
Automatic Route Selection (ARS) feature, off-premise keyboard dialing,
and off-premise abbreviated dialing. Used only in System 75 R1V3 XE
and R1V4 applications where Mult-Frequency (MF) generation/detection is
not required.
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