About Internet Speed

Last Updated on Sunday, 14 February 2016 10:16 Written by wearefaster Sunday, 14 February 2016 10:16

The bit rates for dial-up modems range from as little as 110 bit/s in the late 1950s, to a maximum of from 33 to 64 kbit/s (V.90 andV.92) in the late 1990s. Dial-up connections generally require the dedicated use of a telephone line. Data compression can boost the effective bit rate for a dial-up modem connection to from 220 (V.42bis) to 320 (V.44) kbit/s.[13] However, the effectiveness of data compression is quite variable, depending on the type of data being sent, the condition of the telephone line, and a number of other factors. In reality, the overall data rate rarely exceeds 150 kbit/s.[14]

Broadband technologies supply considerably higher bit rates than dial-up, generally without disrupting regular telephone use. Various minimum data rates and maximum latencies have been used in definitions of broadband, ranging from 64 kbit/s up to 4.0 Mbit/s.[15] In 1988 the CCITT standards body defined “broadband service” as requiring transmission channels capable of supporting bit rates greater than the primary rate which ranged from about 1.5 to 2 Mbit/s.[16] A 2006 Organization for Economic Co-operation and Development (OECD) report defined broadband as having download data transfer rates equal to or faster than 256 kbit/s.[17] And in 2015 the U.S. Federal Communications Commission (FCC) defined “Basic Broadband” as data transmission speeds of at least 25 Mbit/s downstream (from the Internet to the user’s computer) and 3 Mbit/s upstream (from the user’s computer to the Internet).[18] The trend is to raise the threshold of the broadband definition as higher data rate services become available.[19]

The higher data rate dial-up modems and many broadband services are “asymmetric”—supporting much higher data rates for download (toward the user) than for upload (toward the Internet).

Data rates, including those given in this article, are usually defined and advertised in terms of the maximum or peak download rate. In practice, these maximum data rates are not always reliably available to the customer.[20] Actual end-to-end data rates can be lower due to a number of factors.[21] Physical link quality can vary with distance and for wireless access with terrain, weather, building construction, antenna placement, and interference from other radio sources. Network bottlenecks may exist at points anywhere on the path from the end-user to the remote server or service being used and not just on the first or last link providing Internet access to the end-user.

https://en.wikipedia.org/wiki/Internet_access

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