Prometheus 6

I need to dream up a machine I'd want to use on an open network.

Customers who want to bring a GSM device to the AT&T network can purchase a Subscriber Identity Module (SIM) through the company, Coe said. If the device operates in U.S. spectrum frequencies, AT&T will activate the device, he said.

AT&T says its wireless network also open to outside devices
IDG News Service 12/6/07
Grant Gross, IDG News Service, Washington Bureau

Customers of AT&T's mobile-phone service can attach outside devices and run outside applications, the company said Thursday, following an announcement last week that Verizon Wireless would open up its network.

But AT&T's GSM-based (Global System for Mobile Communications) network has been open to outside devices and applications for years, the company said. AT&T will start to publicize that information through salespeople at AT&T stores, Ralph de la Vega, CEO of the company's wireless business, told USA Today.