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 |
Token
RingLANs |
| 10Mbps |
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 |
| 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 Measurementbit= 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.
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