Mobile Phone

Digital-Advanced Mobile Phone Service

Digital-Advanced Mobile Phone Service

mobile-phone-service

Digital-to-analog conversion is a process in which signals having a few (usually two) defined levels or states (digital) are converted into signals having a theoretically infinite number of states (analog). A common example is the processing, by a modem,of computer data into audiofrequency (AF) tones that can be transmitted over a twisted pair telephone line. [...]