One possible/probable fix... If there's a level pot (control) to the DTMF Decoder section within the controller... crank it way down in value. The combination of extra hot audio with other unwieldy events confuse the decoder into false detection.
Like the famous political banner "it's the economy stupid".... In your case "it's the audio level" Now back to the economy... cheers, s. ps: If there's no specific audio pot/control for the DTMF Decoder you will/may need to reduce the main controller audio input or mod the controller internal audio path circuit to reduce the value sent to the decoder section to a more reasonable level. I use a simple audio leveler circuit where required. > "Tony L." <[EMAIL PROTECTED]> wrote: > The DTMF muting feature on one of our CAT-1000 controllers occasionally > falses and sends cover tone over a user's voice. This happens to one > user more so than anyone else. > > Is there an adjustment? Why does this happen on only one of 3 idential > controllers? > > Thanks. >
