I checked the wiki and the archive and couldn't find anything along these lines.... I have an application which will call a list of numbers and play a .wav file (basic JS code below). It starts playing the .wav file 1s after the user answers. This works, unless my app calls an answering machine (like a POTS one at home, or my cellphone voice mail). I need a way to determine that some audio greeting is being played back to me from the remote end (more than just a live human saying "Hello"), ignore it, then wait for the 'beep' tone when the answering machine starts recording, and then start playing my .wav file. Does anyone know if that tone is a standard tone? Is it DTMF so that teletone can detect it, or is it something else (it sounds like a single tone to me, not dual-tone). Will every answering machine/voice mail system in the world generate the same tone? session.originate(target,target); session.waitForAnswer(30000); session.execute("sleep","1000"); session.streamFile( AudioFile, "",""); Thanks, Tom =============== tuhl@ix.netcom.com