My house is in a low-tech, dial-up only "hole" in rural Maine. There are ~20 households in the same predicament. (The local cable company will run cable to us for $5K per household! We are >20,000' from the nearest DSL switch. Cell phone use is spotty. Ditto satellite.)
Been using a UFO Airport Extreme, with a modem built-in. I have gotten a newer Airport Extreme (the flat model), which doesn't have it's own modem. I have tried to use one of the short-lived little Apple modems, which has a USB plug at one end and an RJ11 phone plug-in at the other, connecting the USB end of the modem to the Airport.
I can't get the new Airport with the external modem to connect to my ISP. Is that even possible?
Thanks
Rick in Maine

MacBook Pro 15" 2.2 GHz, and a MacBook(first Intel model)