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5/12/2008- What is Accelerated
Dial-Up? We Break Down How it Works. So you've seen the ads promising greatly improved, broadband-like speeds and wonder how the companies can speed up your phone line connection. Actually they can't. The FCC has placed a limit on pulse code modulation (PCM) modems to transmit data only up to 53Kbps over phone line connections. This limit was implemented to protect the integrity of the phone network. So your ISP cannot technically speed up your phone line's bandwidth. They would be breaking the law if they did so! What accelerated plans can do however is use some pretty cool software to compress and store data to simulate a faster connection. When you click on a web page, your accelerated dial-up provider accesses the page first and immediately compresses the text, images, and other web objects. These compressed files are then sent to your computer where additional software decodes the compressed files and displays them to you on your web browser. Typically website text is compacted to just 5%, increasing effective throughput to approximately 1000 Kbps (quite a bit), and images are lossy-compressed to 15-20% increasing throughput to ~350 Kbps (also not bad). The downside to compression is that the image quality is degraded. This is a small trade off for the increased speeds for many. Users can always change the settings for compressing images, or can click on an image to see its full quality form with most systems. For those that select a higher image quality, pages that are largely text, like Craigslist or Google, will still almost always load much faster since they are mostly image free. Another way some companies are accelerating dial-up browsing is storing (or caching) more of your commonly visited web pages. This way each time you visit the site your browser or your ISP can access the stored data instead of grabbing it off of a web server from who knows where. So now you know how accelerated dial-up works and you can choose a plan if you wish. Almost all of our providers on our site has an accelerated plan. It will cost you a bit more however as there is extensive computer processing involved by your ISP. More processing power means more computers and thus higher investment. However the time saved by many that use the accelerated plans could be well worth the added expense. Cheers, The Cheap Dial-Up Access Team |
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