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Wednesday, December 14, 2005

Computer Network Speeds

Here's a handy reference on maximum computer network speeds from http://www.bandwidthplace.com


Dial-up
An analog modem using twisted pair (phone) copper lines.

56k 0.06 Mbit/s (56 Kbit/s)
ISDN 0.13 Mbit/s (128 Kbit/s)


Cable
Uses coaxial copper cable.
Average 2.00 Mbit/s
Maximum 10.00 Mbit/s
Upstream avg* 0.50 Mbit/s (500 Kbit/s)


DSL
Digital Subscriber Line. Uses twisted pair (phone) copper lines.
IDSL 0.13 Mbit/s (128 Kbit/s)
UADSL 1.50 Mbit/s
UADSL up* 0.51 Mbit/s (512 Kbit/s)
HDSL 1.50 Mbit/s
SDSL 2.00 Mbit/s
RADSL 7.00 Mbit/s
RADSL up* 1.00 Mbit/s
ADSL 8.00 Mbit/s
ADSL up* 1.00 Mbit/s
VDSL 51.64 Mbit/s
VDSL up* 19.20 Mbit/s


Trunk
Usually delivered by fiber optic or microwave, although T1 may use twisted pair (phone) copper lines (HDSL).
T-1 1.54 Mbit/s
T-3 44.74 Mbit/s


Optical Carrier
Fiber optic backbone.
OC-3 155.52 Mbit/s
OC-12 622.08 Mbit/s
OC-48 2,488.32 Mbit/s
OC-96 4,976.64 Mbit/s
OC-192 9,953.28 Mbit/s
OC-255 13,219.20 Mbit/s


Ethernet
Used for LANs.

10 10.00 Mbit/s
100 100.00 Mbit/s
1000(Gigabit)1,000.00 Mbit/s


Wireless
May be fixed or mobile.
HomeRF 1.20 Mbit/s
802.11a 54.00 Mbit/s
802.11b 11.00 Mbit/s
802.11g 54.00 Mbit/s
802.11n 100.00 Mbit/s
CSD 0.01 Mbit/s (9.6 Kbit/s)
CDMA 0.01 Mbit/s (14.4 Kbit/s)
iDEN 0.02 Mbit/s (19.2 Kbit/s)
CDPD 0.02 Mbit/s (19.2 Kbit/s)
1XRTT 0.14 Mbit/s (144 Kbit/s)
HSCSD 0.06 Mbit/s (56 Kbit/s)
CDMA 2.5G 0.06 Mbit/s (64 Kbit/s)
GPRS 0.17 Mbit/s (171.2 Kbit/s)
EDGE 0.38 Mbit/s (384 Kbit/s)
3G 0.38 Mbit/s (384 Kbit/s)
UMTS 2.00 Mbit/s
3G1xEV-DO 2.40 Mbit/s
3G1xEV-DV 5.00 Mbit/s


* Some connections are asymmetrical, they download faster than they upload.

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