|
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Maximum
Dedicated Bandwidths
How
fast is fast? This chart puts into perspective line speeds used in Internet
backbones, LANs, and WANs.
|
13.21
Gbps
|
OC-255
|
|
10
Gbps
|
OC-192
|
|
4.976
Gbps
|
OC-96
|
|
2.488
Gbps
|
OC-48,
STS-48
|
|
1.866
Gbps
|
OC-36
|
|
1.244
Gbps
|
OC-24
|
|
933.12
Mbps
|
OC-18
|
|
622.08
Mbps
|
OC-12,
STS-12
|
|
466.56
Mbps
|
OC-9
|
|
155.52
Mbps
|
OC-3,
STS-3
|
|
100
Mbps
|
CDDI,
FDDI, Fast
Ethernet, Category
5 cable
|
|
51.84
Mbps
|
OC-1,
STS-1
|
|
44.736
Mbps
|
T-3,
DS-3 North America
|
|
34.368
Mbps
|
E-3
Europe
|
|
20
Mbps
|
Category
4 cable
|
|
16
Mbps
|
Fast
Token Ring LANs
|
|
10
Mbps
|
Thin
Ethernet, category 3 cable, cable
modem
|
|
8.448
Mbps
|
E-2
Europe
|
|
6.312
Mbps
|
T-2,
DS-2 North America
|
|
6.144
Mbps
|
Standard
ADSL downstream
|
|
4
Mbps
|
Token
Ring LANs
|
|
3.152
Mbps
|
DS-1c
|
|
2.048
Mbps
|
E-1,
DS-1 Europe
|
|
1.544
Mbps
|
ADSL,
T-1,
DS-1 North America
|
|
128
Kbps
|
ISDN
|
|
64
Kbps
|
DS-0,
pulse code modulation
|
|
56
Kbps
|
56flex,
U.S. Robotics x2 modems,
|
|
33.6
Kbps
|
56flex,
x2 modem communications rate
|
|
28.8
Kbps
|
V.34,
Rockwell V.Fast Class modems
|
|
20
Kbps
|
Level
1 cable, minimum cable data speed
|
|
14.4
Kbps
|
V.32bis
modem, V.17 fax
|
|
9600
bps
|
Modem
speed circa early 1990s
|
|
2400
bps
|
Modem
speed circa 1980s
|
Units of Measurement
bit=
smallest unit of digital information, i.e. ones & zeros
byte= a set of bits
bps= bits per second
Kbps= kilobits per second =1000 bits per second
Mbps = Million bits per second =1,000,000 bits per second
Gbps = Gigabits per second = 1,000,000,000 (one billion) bits per second
Tbps = Terabits per second = 1,000,000,000,000 (one trillion) bits per second
*Editor's note: individual components in the
bandwidth measurement chart have not been separated by Open Systems Interconnect
(OSI) protocol layer or media.
Source:
http://www.webopedia.com/quick_ref/bandwidth.asp
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