Throughout the year I have been asked on numerous occasions is it possible to record OCS Voice calls. Out the box no. But PostCTI have developed a neat solution that requires no client install that can do just this. Adrian was kind enough to forward this link onto me -

http://unified-communications.blogspot.com/2008/07/postcti-live-pa-intelligent-call.html

If you would like to trial it, let me know and I'll put you in contact with the relevant folk.