What's everyone using for eFax/hosted faxing these days? I've currently got about 100 fax lines at about a dozen locations running on a combination of Centrex lines, an EOL FaxFinder, and even a handful running on ATA's. Looking to get rid of the FaxFinder and the Centrex lines. Most of the machines are Sharp MX series MFD's, but I know I have a few ancient fax-only machines out that that will need to connect to an ATA or similar gateway device.