GSM
GSM. , GSM- . GSM, .
GSM 900/1800
GSM 850/1900 , , , .
, , 3- GSM- ( 850 ). GSM . Internet , .
IMT-MC 450
IMT-MC 450 CDMA . , , . .
CDMA 2000 1x 153 /. EV-DO (Sky-Turbo), EV-DO, 3,1 /.
Skylink , , USB- .
3G?
, (ITU), , : ( 120 /) - 144 /, ( 3 /) - 384 /, - 2,048 /.
NTT DOCOMO, 1 2001 . FOMA.
, 3G Skylink, , . , , . , , Skylink.
(, ) 3G UMTS ( wCDMA) HSDPA. . , , GSM UMTS/HSDPA. , 3G ( ).
UMTS (Universal Mobile Telecommunications System), - , (ETSI) 3G . UMTS (WCDMA). , 1998 , 3G. 2 /. WCDMA , 2 , .
HSDPA (. High-Speed Downlink Packet Access - ) - , (4G). 14,4 /., - 3 /.