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8 ports of tone detection on the Time Division Multiplexing (TDM) bus that function the same as the TN2182, but the TN744C does not support call progress, tone generation, or clocking
Supports digital signal processing of Pulse Code Modulation (PCM) signals on each port to detect tones and other signals
Generation of tones is also supported for applications such as Release 2 Multi-Frequency Compelled (R2-MFC), Spain MF, and Russia MF
Gain (or loss) and conferencing can be applied to PCM signals received from the TDM bus
Additional support includes DTMF detectors to collect address digits during dialing
The TN744D supports all the functions of the TN744C plus additional call classifier options for various countries
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