I was having a lot of problems with Fax Relay enabled. Faxes and modems have improved since I upgrading the vg248s (1.1.2), changed the 6608 load(D004030145S1), and disabed fax relay everywhere. I still have a few "fax/modems" attached to NT servers that are erroring on 30-40% of the faxes. Basically I went from 50% to 90% on analog devices. Does anybody have 100% success on Fax machines, Modems, and "fax/modems" and if so are you using fax relay or pass-through? Basically I'm about to try going back to Fax Relay on the new loads to see if I can get closer to 100%.