TT World

Data Communication Speed Comparison

28.8 Kbps Plain Old Telephone System (POTS)
56 Kbps Switched 56
56 Kbps - 34 Mbps Switched Multimegabit Data Service (SMDS)
64 Kbps Integrated Services Digital Network (ISDN)
64 Kbps DS0
230.4 Kbps LocalTalk
640 Kbps / 6 Mbps
(upstream/downstream)
Asymmetric Digital Subscriber Line (ADSL)
1 and 2 Mbps IEEE 802.11 wireless (2.4 GHz band)
1.544 Mbps DS1/T1
2 Mbps PCS Wireless
2.048 Mbps E1
6.312 Mbps DS-2/T2
10 Mbps 10Base-T Ethernet
11 Mbps IEEE 802.11b wireless (2.4 GHz band)
12 Mbps Universal Serial Bus (USB)
20-24 Mbps U-NII Wireless
25.6-155.52 Mbps Asynchronous Transfer Mode (ATM)
34.368 Mbps E3
40 Mbps SCSI-1
40 Mbps IEEE 802.11a wireless (5.6 GHz band)
44.736 Mbps DS3/T3
51.84 Mbps OC-1/STS-1 Synchronous Optical Network (SONET)
80 Mbps Fast SCSI
100 Mbps 100Base-T Ethernet (Fast Ethernet)
155.52 Mbps OC-3/STM-1
160 Mbps Fast Wide SCSI
160 Mbps Ultra SCSI
274.176 Mbps DS-4/T4
320 Mbps Wide Ultra SCSI
400 Mbps FireWire (IEEE 1394)
466.56 Mbps OC-9/STM-3
622.08 Mbps OC-12/STM-4
640 Mbps Wide Ultra2 SCSI
1000 Mbps Gigabit Ethernet
1.244 Gbps OC-24/STM-8
1.280 Gbps Ultra3 SCSI
1.866 Gbps OC-36/STM-12
2.488 Gbps OC-48/STM-16
4.976 Gbps OC-96/STM-32
9.953 Gbps OC-192/STM-64

 


 

Quick Glossary

Kbps Kilobits per second. (Kilo = thousands)
Mbps Megabits per second. (Mega = millions)
OC-n [Optical Carrier] A basic unit defined in increments of 51.84 Mbps (OC-1/STS-1 speed), where n is a multiple of that unit. Uses optical fiber network.
STM-n [Synchronous Transfer Module] A basic unit defined in increments of 155.52 Mbps (OC-3/STM-1 speed), where n is a multiple of that unit.
STS-n [Synchronous Transfer Signal] Similar to OC-n but uses electrical network.
SCSI Small Computer System Interface