OC-255 = 13.21 Gbps
OC-192 = 10 Gbps
OC-96 = 4.976 Gbps
OC-48 = STS-48 *2.488 Gbps
OC-36 = 1.866 Gbps
OC-24 = 1.244 Gbps
OC-18 = 933.12 Mbps
OC-12 STS-12 = 622.08 Mbps
OC-9 = 466.56 Mbps
OC-3, STS-3, category 5 cable, high-speed ADSL downstream = 155.52 Mbps
CDDI, FDDI, Fast Ethernet = 100 Mbps
OC-1, STS-1 = 51.84 Mbps
T-3, DS-3 North America = 44.736 Mbps
E-3 Europe = 34.368 Mbps
Category 4 cable = 20 Mbps
Token Ring LANs = 16 Mbps
Thin Ethernet, category 3 cable, cable modem = 10 Mbps
E-2 Europe = 8.448 Mbps
T-2, DS-2 North America = 6.312 Mbps
Standard ADSL downstream = 6.144 Mbps
DS-1c = 3.152 Mbps
E-1, DS-1 Europe = 2.048 Mbps
T-1, DS-1 North America = 1.544 Mbps
ISDN = 128 Kbps
DS-0 = 64 Kbps
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 1980s
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