Advanced Mobile Telephone System

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Mobile communication standards
GSM / UMTS (3GPP) Family
GSM (2G)
UMTS (3G)
UMTS Rev. 8 (Pre-4G)

cdmaOne / CDMA2000 (3GPP2) Family
cdmaOne (2G)
CDMA2000 (3G)
UMB (Pre-4G)

AMPS Family
AMPS (1G)
D-AMPS (2G)

Other Technologies
0G
1G
2G
Pre-4G

Channel Access Methods

Frequency bands

The Advanced Mobile Telephone System (not to be confused with Advanced Mobile Phone System) was a 0G method of radio communication, mainly used in Japanese portable radio systems. It, like its successor HCMTS, operated on the 900 MHz band.