I have a customer who has a BCM 50 with 5 ip licenses. They currently have 5 ip phones connected to it. Obviously, to add more ip phones, they would have to purchase the keycodes. However, shouldn't they be able to just unplug one from one area if they need one in another spot? I had him try, but it's not working and even though the one ip phone is unplugged, it still shows it active in the system programming. Do the licenses follow the phones?