Hello list, I am struck with a problem: I have a setup where I accept calls on an FXO port from the PSTN and redirect them immediately to an FXS port where a data acquisition appartaus is waiting for data sent in DTMF format. The problem I am experiencing is that Asterisk will in any case "listen" to incoming DTMF tones on the line and will sinthetize them on the output line - but with a wrong cadence! That is, the devices send DTMF data with 60ms tone and 40ms silence, while Asterisk will "rebuild" them but with 100ms tone and 100ms silence. this leads to a lot of problems. I have already tried relaxdtmf but this did not solve the resinthesis problem. I am wondering: - is there any way to let asterisk "pass through" the tones without resynthetising them? - or, is there any way to make a Zap channel completely ignore any DTMF tone, and therefore letting it pass the tones along as if they were speech? I am looking for compilation #defines, but have found none so far. Thanks l. -- Loway Research - Home of QueueMetrics http://queuemetrics.loway.it