Red box

A red box is a device that people used illegally in the 20th century to make free telephone calls at a payphone. It worked by playing back the same sounds that the payphone sends to the phone company when coins are put into it.

Related pages

• Blue box

Other websites

• "Frequently Asked Questions About Red Boxing" by Mr. Sandman
• All about the Red Box and related devices Archived 2007-03-13 at the Wayback Machine
• Red Boxing For Dummies Archived 2007-01-25 at the Wayback Machine