We have 10 enhanced agents today, which comes with 300 IVR ports. We use the system heavily as an IVR, but do also have a small call center using those 10 agent licenses. We want to move from enhanced to premium licensing so we can do database integration. But when we do that, would our IVR port count drop down to 20? That's not an option for us, due to our heavy IVR use. Would we need to license additional IVR ports separately?