Thought this may be of interest to people. I've just received notification that Worldcom are rolling out (as of Midnight Wednesday Pacific time) a new version of Peermaker which allows you to create "best effort" PVCs at the MAE-ATM's. These are not true UBR PVCs, but rather a PVC with a commit rate of 100 cells/sec, and burst rate of your line speed. These are certainly a lot easier to work with than the old version where you had to predict how big a PVC to create for each peer! Simon