# CDMA2000 1xRTT | Generation | [[3G - High-speed digital cellular telephony\|3G]] | | --------------------- | --------------------------------------------------------------------------------------------- | | Standard Familly | [[CDMA 2000 - Code-Division Multiple Access 2000\|CDMA 2000]] | | Channel Access Method | [[CDMA - Code-Division Multiple Access\|CDMA]]/[[TDMA - Time-division multiple access\|TDMA]] | CDMA2000 1xRTT is the core [[CDMA 2000 - Code-Division Multiple Access 2000|CDMA 2000]] wireless air interface standard. | Revs | Name | Description | | ----- | ----------- | ------------------------------------------------------------------------------ | | Rev.A | | | | Rev.B | 1X | | | Rev.C | 1xEV-DV | | | Rev.D | 1xEV-DV | | | Rev.E | 1X Advanced | It provides up to four times the capacity and 70% more coverage compared to 1X |