Call Recording Server

I have a Conferencing Bridge we want to set our bridge for off bridge recording. So basically the Bridge when you press *2 will initiate a call dials a number which is pointed to a recording server it sends a dial string to that recording server with conference information conference id calling number and called number. it then will start recording the call when the call is done the room closes in turn ending the call and stopping the call recording . Then we would access the recorded conference files via ftp or web . I’m not sure how to accomplish this i know asterisk can do it as ive seen it done way in the past on another bridge i just don’t have the documentation