In 1968, the Federal Communications Commission allowed the Carterfone and other devices to be connected directly to the AT&T network, as long as they did not cause harm to the system. This ruling (13 F.C.C.2d 420) created the possibility of selling devices that could connect to the phone system using a protective coupler, and opened the market to customer-owned equipment. The decision is often referred-to as "any lawful device"...
In 1968, the Federal Communications Commission allowed the Carterfone and other devices to be connected directly to the AT&T network, as long as they did not cause harm to the system. This ruling (13 F.C.C.2d 420) created the possibility of selling devices that could connect to the phone system using a protective coupler, and opened the market to customer-owned equipment. The decision is often referred-to as "any lawful device"...
http://en.wikipedia.org/wiki/Carterfone
Here's to hoping this same ruling happens in the wireless space next.