OK, I think I understand the problem. Luke, you are thinking HFC tech that was originally introduced in the 90s. I am thinking of the systems which connect nodes to the master headend using IP over fiber. This system I am referring to allows many MPEG streams to be simultaneously sent out over the IP mulicasts around the fiber ring. At each node, IP multicasts are joined into and then the IP MPEG streams are modulated onto the local plant. This is how SDV will work well. All of the MPEG streams are available on the fiber ring but only those that have current requests from the node will actually be modulated onto the plant.