Advanced Mobile Phone System (AMPS) is an analog mobile cell phone system standard developed by Bell Labs, and officially introduced in the Americas in 1978, Israel in 1986, and Australia in 1987. It was the primary analog mobile phone system in North America (and other locales) through the 1980s and into the 2000s. As of February 18, 2008, carrie...
Found on
http://en.wikipedia.org/wiki/Advanced_Mobile_Phone_System
(from the article `telephone and telephone system`) During this time the American cellular radio system, known as the advanced mobile phone system, or AMPS, was developed primarily by AT&T and ... ...more potential communicators than there are available frequency slots. In order to make efficient use of the communications channel, a...
Found on
http://www.britannica.com/eb/a-z/a/21
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