I dont really know what it is, skype PBX for communications purposes. To tell you truth, i am confused by the whole thing. I know a PBX is like the automatined answering machine thing, and i know it is a personal network of phones… phones. and i know you can use skype like a phone service and you can buy all these neat things or you computer to make it easy to use skype. im just still trying to grasp what exactually what a Skype PBX does.