search for: special_information_tone

Hi, Has anybody any idea about detecting Special Information Tone(SIT) when making utbound calls? http://en.wikipedia.org/wiki/Special_information_tone I googled for detecting SIT in Asterisk but couldn't find useful results. Thanks, --Sam

This sort of message is usually preceded by some magic tones that allow direct marketing application to immediately drop a call to a dead phone number. What is the proper terminology for the tones? Where can I find information about how this is implemented? -- Drew Einhorn

I receive several calls from this scamer: Senior SafeAlert It is an automated call and they keep rotating their caller ID so it is harder to block them. Does asterisk have a "fax" sound tone? If I block their number and play "fax" tone/sound maybe they will remove me from their calling list. I've tried to call them but nothing helps. Any better ideas? They keep calling