I agree with R4+Z. I have found that going with a viking relay box is an affordable and quite easy solution. Incoming is routed to a CO port and outgoing is routed through an analog port. Problem solved. Point the ring of the door bell anywhere you want. An extension or a door bell. Of course if you point it to a bell you will need people to group pickup the call. Which my IS group seems to be incapable of. Also they don't pick up when you call them directly. They still don't know why I can always yell at them through the phone when they don't pick up. Voice call is an ace in the phone guys pocket.