I went through the following document
I configured everything on Microsoft side and callmanager.
What I am not sure and hoping that someone have tried and successfully tested it, is how does CM talk to Exchange 2007 without any ports.
I assume that if I can ping back and forth between CM and exchange, IP connectivity is valid and the SIP trunk should work.
When I dial the VM pilot I get fast busy.
Do i have to do anything on Exchange 2007 for DTMF. How does Exchange understand the DTMF or the information passed over from CM?