| Sounds like a cool idea that will appeal to the smaller customers and small enterprises; medium to large enterprises will / should already have such a system in place in their own data centers and will more than likely be very resistant to the idea of putting their data out on the web regardless of how secure it might be.
Another thing to keep in mind when you're dealing with dial up is the slow speeds of most of the secure modems out there - nothing worse than trying to dump a 1500+ station database on a 2400bps modem, it will take hours to do. We've also found that some secure modems suffer from buffer 'overrun' problems where they are good for maint only, if you try to dump a large database you'll end up with holes in the data - usually in the middle somewhere difficult to find.
If this takes off you may want to consider an arrangement where you provide the modem (for a fee) and the customer provides the line, this will ensure that you're dealing with a reliable piece of hardware. Most customers that I've dealt with won't allow their PBXs anywhere near a public internet connection - a few will allow VPN (through RSA tokens) stuff but that can get pretty complicated will all of the various VPN clients out there.
I'm sure you have also considered the liabilities should something go wrong - what happens if your system causes corruption in a database and a vendor has to get in involved on T&M? |