A special fee that local telephone companies are allowed to charge all telephone customers for the right to connect with the local phone network. Cellular subscribers pay this fee along with a 3 percent federal telephone excise tax. Actual time spent talking on the cellular telephone. Most carriers bill customers based on how many minutes of airtime they use each month. Airtime charges during peak periods of the day vary from about 20 cents to more than 40 cents per minute, depending on the service plan selected.
Most carriers offer reduced rates for off-peak usage.
The name also can be recalled by using the letters on the phone keypad. By contrast, standard memory dial recalls numbers from number-only locations. The traditional method of modulating radio signals so that they can carry information. A fraud prevention technology that takes a number of values to create a shared, secret value used to verify a user's authenticity. Most areas of the US have two cellular carriers, each of which operates on a different frequency band.