? , , . , ,
- . ( ) , . : , . , , ( 56 Kbps). , , (traffic), , , . - .
, (dial-up), ? . , - 1 2 , , 25-50 .
, : ( ), , , , .
ISDN
, , ISDN (Integrated Services Digital Network), . - . , , . ( 384 Kbps). , ISDN ISDN ? ISDN , , ( ) 2-3 . , ISDN , , : . . ISDN . 1 3 . ? , , ISDN .
ADSL
, . ADSL (Asymmetric Digital Subscriber Line) 9 Mbps 1 Mbps . , .
, , , . , , . , 24 . - . . .
frame relay
frame relay ( ). : (CIR), ( 2Mbps). , . , 24 . , . frame relay, , , . frame relay . , .
, . , , , 30M/ (download) 2.5M/ (upload) . , , . -, , . . , , IP (Internet Protocol), : ATM, MLPPP, CDMA, TDMA, CSMA/CD etc. ATM (Asynchronous Transfer Mode) . , , -. , . , , - ?! , , HFC (Hybrid Fiber Coaxial) . , , , . HFC . , , , . , . , , .
. , ( ). . . , , .
.
" ":
1 -
2 - Dial-UP
...
15 - WiMAX
16 -
17 -
18 - GPON
19 - WiMAX Yota 4G
20 -