I have created an IDC tree to convert DID 9000 to sys. # 5200 and programmed 5200 as a key on a phone. When I call the DID I am routing to the attendant. I think I still need to change the route that I come in on, correct? The NTP is pretty clear but I just want to confirm that once I allow IDC on this incoming route and put in my IDC tree # it won't have any adverse impact on regular existing incoming traffic. Please confirm. Thank you.