"Dial direct" automatic radiotelephone system

The Dial Direct system enables radio units to dial any other mobile unit or any subscriber´s land phone directly. Conversely, any land telephone subscriber may dial any mobile unit directly. The system is completely automatic and no operators are required. Through interconnections with other telephone companies, it is possible to make long distance toll calls from mobile units, simply by dialing a long distance operator, which is standard land telephone practice, however if used with a telephone exchange using an automatic ticketing device and inter-city direct toll dialing, the long distance operator would not be required. It is also possible to use the system on private radiotelephone systems such as MCC operations or any other mobile users with duplex channel assignments by the addition of a private telephone exchange connected to the terminal of the Dial Direct base equipment.