High-speed dialup is a feature provided by Internet service providers to speed up dialup connections using a special server called an acceleration server. An acceleration server acts as a channel of transfer between a Web page and a user’s dialup connection. By selectively compressing, filtering and caching the data, the acceleration server speeds up the process of loading a Web page.

For a common Internet user, high-speed dialup can make a dialup connection up to five times faster. Although broadband has largely replaced dialup Internet connections, a small percentage of Internet users in the U.S. still rely on it, particularly in rural areas.