Sorry, but now I have to disagree.
All of those numbers listed actually ring a call center. The CM answering the phone knows what resort front desk you were trying to reach by the number you come in on and will answer like they are at the front desk.
Unless they have made some changes in the past 2 years, that is how it is. My SIL worked at a call center in Tampa until the end of 2010 and what number a call came in on would determine how she answered the phone.
They did have the ability to transfer a call to the actual front desk, but that happened very rarely. They hounded them to resolve whatever issue it was there at the call center.