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
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