I have been using DTMF to control stuff for a while. I am now looking for a Phone latching circuit to "answer" the phone and allow me to send my dtmf tones to pan,tilt a camera etc. and then "hang" the phone up when I hang up the other end. I have been able to find surprisingly little about how to make this on the web. I am wondering if anyone has done this before and if the Picaxe can be of any use for this application. The phone I would use would be an analog phone line. I think it goes from about 8-9v DC to about 90V ac when it is ringing. Any help would be appreciated.