The CMX867A's “high-quality” DTMF decoder, for industrial control and security systems, telephone telemetry and advanced payphones offer high immunity to falsing on voice. A high-speed serial bus, ...

His DTMF decoder box uses a CM8870 DTMF decoder chip, which you might assume is all you need to get the job done. This chip performs its duties very well, ...

The scammer then uses a dual-tone multifrequency decoder, also known as a “DTMF decoder,” to convert the recorded tones into the gift card number and PIN. The scammer then drains money from ...

Cimarron Technologies Corp.'s C Plus II Display/Decoder has a single window display with a review of last 20 messages. ... MDC-1200, FleetSync, or DTMF compatible.

So a DTMF transmitter is needed to transmit to a decoder to simulate keypress on game controller all needed to be wired together. Cheapo board being used needs a microphone and amplifier to lose ...