We have just set up the Automated Attendant feature. We have always used a receptionist but now with the economy in the toilet we can’t afford one.

Now, if a user is on their extension talking and a call is routed to them via the system, the extension still rings once, then goes silent until the Voice Message system picks up with the users greeting.

My question is, how can I change it so that if the extension is in use the phone does not ring at all. I don't really care if the outside caller hears a few rings before it goes to voice mail but if it can be changed so that if the extension is in use, the caller is automatically put to voice mail that would work also.

I know that’s a bit long winded but I don't know how else to put it.