Start with Band Width details

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 Ring LANs
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 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