The term used by AT&T's Bell Laboratories (prior to divestiture in 1984) to refer to its cellular technology. The AMPS standard has been the foundation for the industry in the U.S., although it has been slightly modified in recent years.
Analogue cellular telephone technology is used mainly in the US. Operates in the 800Mhz band frequency. This was the original American analogue cellular radio system used by AT&T (the digital enhancement was originally called D-AMPS, and is now known as TDMA). About 40% of Latin American and 25% of North American subscribers are on AMPS. The bulk of AMPS migration is to CDMA-One and TDMA.
A standard system for analogue mobile communications which originated in the United States but is also used in other countries, for example in Canada. AMPS operates in the 800 and 900 MHz frequency bands.