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Main article: "Web accelerator

As telephone-based internet lost popularity in the early 2000s, some Internet service providers such as TurboUSA, "Netscape, CdotFree, and "NetZero started using "proxy servers to increase the perceived speed. As an example, EarthLink advertises "surf the Web up to 7x faster" using a compression program that squeezes images, text, and HTML/JavaScript prior to transmission across the phone line.[13]

The pre-compression operates much more efficiently than the on-the-fly compression of V.44 modems. Typically website text is compacted to 5% thus increasing effective throughput to approximately 1000 kbit/s, and JPEG/GIF/PNG images are lossy-compressed to 15-20% (increasing throughput up to 300 kbit/s).

The drawback of this approach is a loss in quality, where the graphics acquire "compression artifacts taking on a blurry or colorless appearance; however, the perceived speed is dramatically improved. (If desired the user may choose to view uncompressed images instead.) Also streaming music and video is incompressible, so that kind of data is still limited to 56k, per the limitation of the modem.

List of dial-up speeds[edit]

List of device bandwidths

Note that the values given are maximum values, and actual values may be slower under certain conditions (for example, noisy phone lines).[14]

Connection "Bitrate
110 baud ("Bell 101) 0.1 "kbit/s (110 bits per second)
300 baud ("Bell 103 or "V.21) 0.3 kbit/s
1200 baud ("Bell 212A or "V.22) 1.2 kbit/s
2400 baud ("V.22bis) 2.4 kbit/s
2400 baud ("V.26bis) 2.4 kbit/s
4800 baud ("V.27ter) 4.8 kbit/s
9600 baud ("V.32) 9.6 kbit/s
14.4 kbit/s ("V.32bis) 14.4 kbit/s
28.8 kbit/s ("V.34) 28.8 kbit/s
33.6 kbit/s ("V.34) 33.6 kbit/s
56k kbps ("V.90) 56.0/33.6 kbit/s
56k kbps ("V.92) 56.0/48.0 kbit/s
Hardware compression ("V.92/"V.44) 56.0 to 320.0 kbit/s (variable)
Server-side web compression    200.0 to 1000.0 kbit/s (variable)


  1. ^ Hauben, Michael; Hauben, Rhonda (1997). Netizens: On the History and Impact of Usenet and the Internet (1st ed.). Los Alamitos, CA: IEEE Computer Society Press. pp. 161–200. "ISBN "0-8186-7706-6. Retrieved 25 February 2017. 
  2. ^ "H-Net Discussion Networks - SprintLink Commercial Availability Announced (fwd)". h-net.msu.edu. 31 July 1992. 
  3. ^ "Many Dial-Up Users Don't Want Broadband". "Fox News Channel. Associated Press. 2008-07-07. Retrieved 2009-11-03. 
  4. ^ a b Todd, Deborah M. (2012-02-15). "Plenty of Internet users cling to slow dial-up connections". Pittsburgh Post-Gazette. Retrieved February 17, 2012. 
  5. ^ "3% of Americans use dial-up at home", Pew Research Center, retrieved 2013-11-28 
  6. ^ LaVallee, Andrew (2009-02-27). "Could You Go Back to Dial-Up? - Digits - WSJ.com". Wall Street Journal. Dow Jones. Retrieved 2009-02-27. 
  7. ^ "Recession Has Many Holding on to Dirt-Cheap Dial-Up". Fox News. 2009-02-26. Retrieved 2009-02-27. 
  8. ^ "Home Broadband 2013". Pew Internet & American Life Project. Retrieved April 20, 2015. 
  9. ^ Kaspersky Technical Support website [search "dial up" slow] July 17, 2015
  10. ^ Alexis C. Madrigal (June 1, 2012). "The Mechanics and Meaning of That Ol' Dial-Up Modem Sound". "The Atlantic. Archived from the original on 2015-08-16. 
  11. ^ Pavel Mitronov. "Modem compression: V.44 against V.42bis". Pricenfees.com. Retrieved 2008-02-18. 
  12. ^ Karl Willdig. "What You Need to Know about Modems". Fermilab Data Communications and Networking Group. Fermi National Accelerator Laboratory. Retrieved 2008-02-18. 
  13. ^ "EarthLink Dial-Up Internet service - fast, reliable dialup access nationwide.". www.earthlink.net. Retrieved 2017-01-12. 
  14. ^ "Data communication over the telephone network". International Telecommunication Union. Retrieved 2008-02-18. 
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