Anyone with the service will be able to turn off Call Waiting by touching a single digit on a Touch-Tone telephone or by turning a switch.

He heard the unmistakable beeping of a Touch-Tone telephone at work.

"The existing Touch-Tone telephone is just not cutting it," said Larry Schwartz, director of advanced residential services for Northern Telecom.

"After you interact with a Touch-Tone telephone, the next obvious step is a personal computer," said Donald C. Licciardello, the president.

"All they need to get a report on their cars is a Touch-Tone telephone, and they get the information in less than a minute."

Later Touch-Tone telephones included a diode bridge that eliminated the polarity sensitivity, so that consumer telephone service is essentially immune to reversal today.

The system is expected to increase the tasks that deaf people can perform at home and in the workplace, allowing them to conduct conversations with anyone who uses a Touch-Tone telephone.

By pressing a button on your Touch-Tone telephone, you get a rebate coupon from your local Chevrolet dealer.

Customers seeing the merchandise and services offered on cable television will be able to flip from one item to another by use of a Touch-Tone telephone.

The customer browses through the items by pressing the appropriate numbers on the Touch-Tone telephone.